added checks to see that KEYCODE_MEDIA_PLAY_PAUSE and KEYCODE_HEADSETHOOK result in correct calls on the player

Author: johngray1965

libraries/test_session_current/src/androidTest/java/androidx/media3/session/MediaSessionTest.java

@@ -650,6 +650,8 @@ controllerInfo, getMediaButtonIntent(KEYCODE_HEADSETHOOK)))
     player.awaitMethodCalled(MockPlayer.METHOD_SEEK_TO_NEXT, TIMEOUT_MS);
     player.awaitMethodCalled(MockPlayer.METHOD_SEEK_TO_PREVIOUS, TIMEOUT_MS);
     player.awaitMethodCalled(MockPlayer.METHOD_STOP, TIMEOUT_MS);
+    player.awaitMethodCalled(MockPlayer.METHOD_PLAY, TIMEOUT_MS);
+    player.awaitMethodCalled(MockPlayer.METHOD_PLAY, TIMEOUT_MS);
     assertThat(callerCollectorPlayer.callingControllers).hasSize(9);
     for (ControllerInfo controllerInfo : callerCollectorPlayer.callingControllers) {
       assertThat(session.get().isMediaNotificationController(controllerInfo)).isTrue();