Release builds are linking with debug libraries
Since updating for Godot 4 beta 4 support, users have been reporting an issue where my builds produced using `template_release` are linked with debug runtime libraries: https://github.com/codecat/godot-tbloader/issues/36

This might be related to #867, but I don't really know enough about SCons to properly debug this. I believe my SCons file is properly configured though, so this might be a bug in godot-cpp?
diff --git a/tools/targets.py b/tools/targets.py
index b3d1c52..e9857dd 100644
--- a/tools/targets.py
+++ b/tools/targets.py
@@ -55,7 +55,7 @@ def generate(env):
     env["optimize"] = ARGUMENTS.get("optimize", opt_level)
     env["debug_symbols"] = get_cmdline_bool("debug_symbols", env.dev_build)
 
-    if "is_msvc" in env and env["is_msvc"]:
+    if env.get("is_msvc", False):
         if env["debug_symbols"]:
             env.Append(CCFLAGS=["/Zi", "/FS"])
             env.Append(LINKFLAGS=["/DEBUG:FULL"])
@@ -66,8 +66,12 @@ def generate(env):
         elif env["optimize"] == "size":
             env.Append(CCFLAGS=["/O1"])
             env.Append(LINKFLAGS=["/OPT:REF"])
-        elif env["optimize"] == "debug" or env["optimize"] == "none":
-            env.Append(CCFLAGS=["/Od"])
+
+        if env["optimize"] == "debug" or env["optimize"] == "none":
+            env.Append(CCFLAGS=["/MDd", "/Od"])
+        else:
+            env.Append(CCFLAGS=["/MD"])
+
     else:
         if env["debug_symbols"]:
             if env.dev_build:
diff --git a/tools/windows.py b/tools/windows.py
index 2983f50..16acc28 100644
--- a/tools/windows.py
+++ b/tools/windows.py
@@ -27,10 +27,6 @@ def generate(env):
         env.Append(CPPDEFINES=["TYPED_METHOD_BIND", "NOMINMAX"])
         env.Append(CCFLAGS=["/EHsc"])
         env.Append(LINKFLAGS=["/WX"])
-        if env["debug_symbols"] or env["target"] == "debug":
-            env.Append(CCFLAGS=["/MDd"])
-        else:
-            env.Append(CCFLAGS=["/MD"])
 
         if env["use_clang_cl"]:
             env["CC"] = "clang-cl"
['tools/windows.py', 'tools/targets.py']