Stop ReactSurface in ReactDelegate::onHostDestroy (bridgeless) (#44873)

Summary:
Pull Request resolved: #44873

Changelog:
[Android][Fixed] - Unmount React root when activity is destroyed on bridgless

Reviewed By: javache

Differential Revision: D58411605

fbshipit-source-id: ff9940efd4cf5da5887d79d99bcf3721e16d6725

Author: fabriziocucci

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactDelegate.java

@@ -134,6 +134,10 @@ public void onHostPause() {
 
   public void onHostDestroy() {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
+      if (mReactSurface != null) {
+        mReactSurface.stop();
+        mReactSurface = null;
+      }
       mReactHost.onHostDestroy(mActivity);
     } else {
       if (mReactRootView != null) {