Fix incorrect cast in RemoveDeleteTree (#43018)

Summary:
Pull Request resolved: #43018

Assuming that if View is a ViewGroup, its ViewManager is a ViewGroupManager is incorrect. Custom ViewManagers may use ViewGroups internally to represent complex views exposed to JS.

Type-check the ViewManager instead to avoid the crash seen in T178300877

Changelog: [Internal]

Reviewed By: cortinico

Differential Revision: D53586565

fbshipit-source-id: 49408098cebc7f76d8be0e585187ba9b6ca52049

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

@@ -1432,8 +1432,9 @@ public void doFrameGuarded(long frameTimeNanos) {
           ViewState thisViewState = getNullableViewState(reactTag);
           if (thisViewState != null) {
             View thisView = thisViewState.mView;
-            if (thisView instanceof ViewGroup) {
-              IViewGroupManager viewManager = getViewGroupManager(thisViewState);
+            ViewManager thisViewManager = thisViewState.mViewManager;
+            if (thisViewManager instanceof IViewGroupManager) {
+              IViewGroupManager viewManager = (IViewGroupManager) thisViewManager;
 
               // Children are managed by React Native if both of the following are true:
               // 1) There are 1 or more children of this View, which must be a ViewGroup