Listen to playWhenReady changes in LeanbackPlayerAdapter

#minor-release

Issue: google/ExoPlayer#10420
PiperOrigin-RevId: 460223064
(cherry picked from commit c43d9f5b)

extensions/leanback/src/main/java/com/google/android/exoplayer2/ext/leanback/LeanbackPlayerAdapter.java

@@ -235,11 +235,6 @@ public final class LeanbackPlayerAdapter extends PlayerAdapter implements Runnab
     // Player.Listener implementation.
     // Player.Listener implementation.
 
 
     @Override
     @Override
-    public void onPlaybackStateChanged(@Player.State int playbackState) {
-      notifyStateChanged();
-    }
-
-    @Override
     public void onPlayerError(PlaybackException error) {
     public void onPlayerError(PlaybackException error) {
       Callback callback = getCallback();
       Callback callback = getCallback();
       if (errorMessageProvider != null) {
       if (errorMessageProvider != null) {
@@ -283,5 +278,13 @@ public final class LeanbackPlayerAdapter extends PlayerAdapter implements Runnab
       int scaledWidth = Math.round(videoSize.width * videoSize.pixelWidthHeightRatio);
       int scaledWidth = Math.round(videoSize.width * videoSize.pixelWidthHeightRatio);
       getCallback().onVideoSizeChanged(LeanbackPlayerAdapter.this, scaledWidth, videoSize.height);
       getCallback().onVideoSizeChanged(LeanbackPlayerAdapter.this, scaledWidth, videoSize.height);
     }
     }
+
+    @Override
+    public void onEvents(Player player, Player.Events events) {
+      if (events.containsAny(
+          Player.EVENT_PLAY_WHEN_READY_CHANGED, Player.EVENT_PLAYBACK_STATE_CHANGED)) {
+        notifyStateChanged();
+      }
+    }
   }
   }
 }
 }