Clear out mTagToSynchronousMountProps on surface stop (facebook#54693)

Summary:
Pull Request resolved: facebook#54693

SurfaceMountingManager stays around even after the surface is stopped - we need to clean these up.

Changelog: [Internal]

Reviewed By: zeyap

Differential Revision: D87875316

fbshipit-source-id: f47a8d34bc9b9f43071c9c113bac1a85a5171748

Author: javache

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/mounting/SurfaceMountingManager.java

@@ -83,7 +83,7 @@ public class SurfaceMountingManager {
       new ConcurrentHashMap<>(); // any thread
   private final Queue<MountItem> mOnViewAttachMountItems = new ArrayDeque<>();
   private JSResponderHandler mJSResponderHandler;
-  private ViewManagerRegistry mViewManagerRegistry;
+  private final ViewManagerRegistry mViewManagerRegistry;
   private RootViewManager mRootViewManager;
   private MountItemExecutor mMountItemExecutor;
 
@@ -336,6 +336,7 @@ public void stopSurface() {
           mMountItemExecutor = null;
           mThemedReactContext = null;
           mOnViewAttachMountItems.clear();
+          mTagToSynchronousMountProps.clear();
 
           FLog.e(TAG, "Surface [" + mSurfaceId + "] was stopped on SurfaceMountingManager.");
         };