Migrate events on ReactRootView and ScrollView to be bridgeless

Summary:
This diff migrates ScrollView events to be compatible with Bridgeless React mode
Changelog: [internal]

Reviewed By: makovkastar

Differential Revision: D19383061

fbshipit-source-id: d303d104a7f3bde8ba54c7be830691146c19072e

ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactScrollViewHelper.java

@@ -11,7 +11,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import com.facebook.react.bridge.JSApplicationIllegalArgumentException;
 import com.facebook.react.bridge.ReactContext;
-import com.facebook.react.uimanager.UIManagerModule;
+import com.facebook.react.uimanager.UIManagerHelper;
 
 /** Helper class that deals with emitting Scroll Events. */
 public class ReactScrollViewHelper {
@@ -57,9 +57,7 @@ public class ReactScrollViewHelper {
     }
 
     ReactContext reactContext = (ReactContext) scrollView.getContext();
-    reactContext
-        .getNativeModule(UIManagerModule.class)
-        .getEventDispatcher()
+    UIManagerHelper.getEventDispatcherForReactTag(reactContext, scrollView.getId())
         .dispatchEvent(
             ScrollEvent.obtain(
                 scrollView.getId(),