Upload APK on playstore instead of uploading app bundle for Custom Apps
**Describe the bug**

Currently, we are trying to upload the app bundle on the play store, but the expansion file is not supported by the app bundle.
Expansion files are necessary for our custom apps.

**Expected behavior**
We should upload the APK for custom apps on the play store.
diff --git a/buildSrc/src/main/kotlin/custom/Auth.kt b/buildSrc/src/main/kotlin/custom/Auth.kt
index 0a1b62d9f..6cf702865 100644
--- a/buildSrc/src/main/kotlin/custom/Auth.kt
+++ b/buildSrc/src/main/kotlin/custom/Auth.kt
@@ -88,12 +88,13 @@ class Transaction(
       ExpansionFile().apply { referencesVersion = versionCode }
     ).execute().prettyPrint()
 
-  fun uploadBundle(outputFile: File) {
-    publisher.edits().bundles().upload(
+  fun uploadBundleAndReturnVersionCode(outputFile: File): Int {
+    val bundle = publisher.edits().bundles().upload(
       packageName,
       editId,
       FileContent("application/octet-stream", outputFile)
     ).execute().prettyPrint()
+    return bundle.versionCode
   }
 
   fun addToTrackInDraft(versionCode: Int, versionName: String?): Track =
diff --git a/custom/build.gradle.kts b/custom/build.gradle.kts
index 986c81061..aaafa51c5 100644
--- a/custom/build.gradle.kts
+++ b/custom/build.gradle.kts
@@ -1,5 +1,3 @@
-import com.android.build.gradle.api.ApplicationVariant
-import com.android.build.gradle.api.ApkVariantOutput
 import com.android.build.gradle.internal.dsl.ProductFlavor
 import custom.CustomApps
 import custom.createPublisher
@@ -26,7 +24,7 @@ android {
     all {
       File("$projectDir/src", "$name/$name.zim").let {
         createDownloadTask(it)
-        createPublishBundleWithExpansionTask(it, applicationVariants)
+        createPublishBundleWithExpansionTask(it)
       }
     }
   }
@@ -66,8 +64,7 @@ fun ProductFlavor.fetchUrl(): String {
 }
 
 fun ProductFlavor.createPublishBundleWithExpansionTask(
-  file: File,
-  applicationVariants: DomainObjectSet<ApplicationVariant>
+  file: File
 ): Task {
   val capitalizedName = name.capitalize()
   return tasks.create("publish${capitalizedName}ReleaseBundleWithExpansionFile") {
@@ -78,18 +75,16 @@ fun ProductFlavor.createPublishBundleWithExpansionTask(
       println("packageName $packageName")
       createPublisher(File(rootDir, "playstore.json"))
         .transactionWithCommit(packageName) {
-          val variants =
-            applicationVariants.releaseVariantsFor(this@createPublishBundleWithExpansionTask)
           val generatedBundleFile =
             File(
               "$buildDir/outputs/bundle/${capitalizedName.toLowerCase()}" +
                 "Release/custom-${capitalizedName.toLowerCase()}-release.aab"
             )
           if (generatedBundleFile.exists()) {
-            uploadBundle(generatedBundleFile)
-            uploadExpansionTo(file, variants[0].versionCode)
-            attachExpansionTo(variants[0].versionCode)
-            addToTrackInDraft(variants[0].versionCode, versionName)
+            val versionCode = uploadBundleAndReturnVersionCode(generatedBundleFile)
+            uploadExpansionTo(file, versionCode)
+            attachExpansionTo(versionCode)
+            addToTrackInDraft(versionCode, versionName)
           } else {
             throw FileNotFoundException("Unable to find generated aab file")
           }
@@ -98,11 +93,6 @@ fun ProductFlavor.createPublishBundleWithExpansionTask(
   }
 }
 
-fun DomainObjectSet<ApplicationVariant>.releaseVariantsFor(productFlavor: ProductFlavor) =
-  find { it.name.equals("${productFlavor.name}Release", true) }!!
-    .outputs.filterIsInstance<ApkVariantOutput>()
-    .filter { it.baseName.contains("universal") }.sortedBy { it.versionCode }
-
 afterEvaluate {
   tasks.filter { it.name.contains("ReleaseBundleWithExpansionFile") }.forEach {
     val flavorName =
['buildSrc/src/main/kotlin/custom/Auth.kt', 'custom/build.gradle.kts']