Merge pull request #84279 from m4gr3d/update_godot_app_launch_mode_3x

[3.x] Update the `launchMode` for the `GodotApp` activity to allow other activities to be part of the same task

platform/android/java/app/AndroidManifest.xml

@@ -66,7 +66,7 @@
             android:name=".GodotApp"
             android:label="@string/godot_project_name_string"
             android:theme="@style/GodotAppSplashTheme"
-            android:launchMode="singleInstance"
+            android:launchMode="singleInstancePerTask"
             android:excludeFromRecents="false"
             android:exported="true"
             android:screenOrientation="landscape"