[Bug] Since 1.11.3 problems reading application.yaml
**Describe the bug**
Quarkus wants to populate a %prod variable while it is running in %dev
1.11.2 was fine
Now with 1.11.3 quarkus wants, that the env variables in %prod are valid while running in %dev

**Expected behavior**
Ignoring the missing environmental variable

**Actual behavior**
`Could not expand value mail.pw in property %prod.quarkus.mailer.password"`


**To Reproduce**

Link to a small reproducer (preferably a Maven project if the issue is not Gradle-specific).

Or attach an archive containing the reproducer to the issue.

Steps to reproduce the behavior:
1. Executing the application

**Configuration**
```properties
# Add your application.properties here, if applicable.
mp:
  openapi:
    scan:
      disable: true
quarkus:
  datasource:
    db-kind: postgresql
  hibernate-orm:
    database:
      generation: update
  http:
    root-path: /example-interface-v2/api/v2
"%dev":
  quarkus:
    datasource:
      jdbc:
        url: jdbc:postgresql://localhost:5432/TestDB
      password: benutzer
      username: benutzer
    hibernate-orm:
      database:
        generation: update # Duplicated code line to insert 'drop-and-create' if needed to import the import.sql
    log:
      min-level: DEBUG
      console:
        enable: true
        format: "%d{HH:mm:ss} %-5p [%c{2.}] (%t) %s%e%n"
        color: true
        darken: 1
        json:
          pretty-print: true
    http:
      port: 8005
    mailer:
      from: example@example.de
      host: smtp.example.de
      password: ''
      port: 465
      ssl: true
      username: example@example.de
"%test":
  quarkus:
    datasource:
      db-kind: h2
      jdbc:
        url: jdbc:h2:mem:test
      password: example
      username: example
    hibernate-orm:
      database:
        generation: drop-and-create
    http:
      test-port: 8805
"%prod":
  quarkus:
    datasource:
      jdbc:
        url: jdbc:postgresql://${postgres.uri}:${postgres.port}/${postgres.db}
      password: ${postgres.password}
      username: ${postgres.user}
    http:
      port: 8082
    mailer:
      from: example@example.de
      host: smtp.example.de
      password: ${mail.pw}
      port: 465
      ssl: true
      username: example@example.de

```

**Screenshots**
N/A

**Environment (please complete the following information):**
 - Output of `uname -a` or `ver`:
 `Linux example-linux 5.8.0-43-generic #49~20.04.1-Ubuntu SMP Fri Feb 5 09:57:56 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux`
 - Output of `java -version`:
 ```
 openjdk version "11.0.10" 2021-01-19
OpenJDK Runtime Environment (build 11.0.10+9-Ubuntu-0ubuntu1.20.04)
OpenJDK 64-Bit Server VM (build 11.0.10+9-Ubuntu-0ubuntu1.20.04, mixed mode, sharing)
```
 - Quarkus version or git rev: `1.11.3`
 - Build tool (ie. output of `mvnw --version` or `gradlew --version`): 
```
------------------------------------------------------------
Gradle 6.8
------------------------------------------------------------

Build time:   2021-01-08 16:38:46 UTC
Revision:     b7e82460c5373e194fb478a998c4fcfe7da53a7e

Kotlin:       1.4.20
Groovy:       2.5.12
Ant:          Apache Ant(TM) version 1.10.9 compiled on September 27 2020
JVM:          11.0.10 (Ubuntu 11.0.10+9-Ubuntu-0ubuntu1.20.04)
OS:           Linux 5.8.0-43-generic amd64
```

**Additional context**
If I remove the %prod section my application runs well in %dev mode
Stacktrace
```
{
    "timestamp": "2021-02-12T11:07:14.032+01:00",
    "sequence": 7490,
    "loggerClassName": "org.jboss.logging.Logger",
    "loggerName": "io.quarkus.runtime.Application",
    "level": "ERROR",
    "message": "Failed to start application (with profile dev)",
    "threadName": "Quarkus Main Thread",
    "threadId": 94,
    "mdc": {
    },
    "ndc": "",
    "hostName": "example-linux",
    "processName": "example-interface-backend-v2-dev.jar",
    "processId": 102797,
    "exception": {
        "refId": 1,
        "exceptionType": "java.util.NoSuchElementException",
        "message": "SRCFG00011: Could not expand value mail.pw in property %prod.quarkus.mailer.password",
        "frames": [
            {
                "class": "io.smallrye.config.ExpressionConfigSourceInterceptor",
                "method": "lambda$getValue$0",
                "line": 44
            },
            {
                "class": "io.smallrye.common.expression.ExpressionNode",
                "method": "emit",
                "line": 22
            },
            {
                "class": "io.smallrye.common.expression.Expression",
                "method": "evaluateException",
                "line": 56
            },
            {
                "class": "io.smallrye.common.expression.Expression",
                "method": "evaluate",
                "line": 70
            },
            {
                "class": "io.smallrye.config.ExpressionConfigSourceInterceptor",
                "method": "getValue",
                "line": 37
            },
            {
                "class": "io.smallrye.config.ExpressionConfigSourceInterceptor",
                "method": "getValue",
                "line": 18
            },
            {
                "class": "io.smallrye.config.SmallRyeConfigSourceInterceptorContext",
                "method": "proceed",
                "line": 20
            },
            {
                "class": "io.smallrye.config.SmallRyeConfig",
                "method": "getConfigValue",
                "line": 192
            },
            {
                "class": "io.quarkus.vertx.http.runtime.devmode.ConfigDescriptionsSupplier",
                "method": "get",
                "line": 44
            },
            {
                "class": "io.quarkus.vertx.http.runtime.devmode.ConfigDescriptionsSupplier",
                "method": "get",
                "line": 13
            },
            {
                "class": "io.quarkus.vertx.http.runtime.devmode.DevConsoleRecorder",
                "method": "addInfo",
                "line": 37
            },
            {
                "class": "io.quarkus.deployment.steps.DevConsoleProcessor$runtimeTemplates-308161071",
                "method": "deploy_9",
                "line": 21438
            },
            {
                "class": "io.quarkus.deployment.steps.DevConsoleProcessor$runtimeTemplates-308161071",
                "method": "deploy",
                "line": 85
            },
            {
                "class": "io.quarkus.runner.ApplicationImpl",
                "method": "doStart",
                "line": 872
            },
            {
                "class": "io.quarkus.runtime.Application",
                "method": "start",
                "line": 90
            },
            {
                "class": "io.quarkus.runtime.ApplicationLifecycleManager",
                "method": "run",
                "line": 97
            },
            {
                "class": "io.quarkus.runtime.Quarkus",
                "method": "run",
                "line": 66
            },
            {
                "class": "io.quarkus.runtime.Quarkus",
                "method": "run",
                "line": 42
            },
            {
                "class": "io.quarkus.runtime.Quarkus",
                "method": "run",
                "line": 119
            },
            {
                "class": "io.quarkus.runner.GeneratedMain",
                "method": "main",
                "line": 29
            },
            {
                "class": "jdk.internal.reflect.NativeMethodAccessorImpl",
                "method": "invoke0"
            },
            {
                "class": "jdk.internal.reflect.NativeMethodAccessorImpl",
                "method": "invoke",
                "line": 62
            },
            {
                "class": "jdk.internal.reflect.DelegatingMethodAccessorImpl",
                "method": "invoke",
                "line": 43
            },
            {
                "class": "java.lang.reflect.Method",
                "method": "invoke",
                "line": 566
            },
            {
                "class": "io.quarkus.runner.bootstrap.StartupActionImpl$3",
                "method": "run",
                "line": 134
            },
            {
                "class": "java.lang.Thread",
                "method": "run",
                "line": 834
            }
        ]
    }
}
```
diff --git a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/devmode/ConfigDescriptionsSupplier.java b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/devmode/ConfigDescriptionsSupplier.java
index cc78c079960..d2306c581df 100644
--- a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/devmode/ConfigDescriptionsSupplier.java
+++ b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/devmode/ConfigDescriptionsSupplier.java
@@ -1,5 +1,7 @@
 package io.quarkus.vertx.http.runtime.devmode;
 
+import static io.smallrye.config.Expressions.withoutExpansion;
+
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -36,13 +38,15 @@ public List<ConfigDescription> get() {
             }
         }
 
-        for (String propertyName : current.getPropertyNames()) {
-            if (properties.contains(propertyName)) {
-                continue;
-            }
+        withoutExpansion(() -> {
+            for (String propertyName : current.getPropertyNames()) {
+                if (properties.contains(propertyName)) {
+                    continue;
+                }
 
-            configDescriptions.add(new ConfigDescription(propertyName, null, null, current.getConfigValue(propertyName)));
-        }
+                configDescriptions.add(new ConfigDescription(propertyName, null, null, current.getConfigValue(propertyName)));
+            }
+        });
 
         Collections.sort(configDescriptions);
         return configDescriptions;
['extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/devmode/ConfigDescriptionsSupplier.java']