Template couldn't be built using MSYS2 CLANG64

### Godot version

v4.3.stable.mono.official [77dcf97d8]

### godot-cpp version

fbbf9ec4efd8f1055d00edb8d926eef8ba4c2cce

### System information

Windows 10

### Issue description

```py
pxd@machine /c/WorkDir/gre3
$ scons use_mingw=yes compiledb=true
scons: Reading SConscript files ...
Auto-detected 16 CPU cores available for build parallelism. Using 15 cores by default. You can override it with the -j argument.
Building for architecture x86_64 on platform windows
scons: done reading SConscript files.
scons: Building targets ...
Compiling godot-cpp/src/godot.cpp ...
Compiling godot-cpp/src/classes/editor_plugin_registration.cpp ...
Compiling godot-cpp/src/classes/low_level.cpp ...
scons: *** [godot-cpp/src/godot.windows.template_debug.x86_64.o] El sistema no puede encontrar el archivo especificado
scons: *** [godot-cpp/src/classes/editor_plugin_registration.windows.template_debug.x86_64.o] El sistema no puede encontrar el archivo especificado
scons: *** [godot-cpp/src/classes/low_level.windows.template_debug.x86_64.o] El sistema no puede encontrar el archivo especificado
scons: building terminated because of errors.
```