PendingIntent in MediaOutputIndicatorSlice could be Hijacked

-Add setPackage() to prevent local information disclosure

Bug: 151645695
Test: make -j42 RunSettingsRoboTests
Change-Id: I74c058a381fceb85695dd76d354fb49f878f9142

src/com/android/settings/media/MediaOutputIndicatorSlice.java

@@ -106,6 +106,7 @@ public class MediaOutputIndicatorSlice implements CustomSliceable {
     public void onNotifyChange(Intent i) {
         final MediaController mediaController = getWorker().getActiveLocalMediaController();
         final Intent intent = new Intent()
+                .setPackage(Utils.SETTINGS_PACKAGE_NAME)
                 .setAction(MediaOutputSliceConstants.ACTION_MEDIA_OUTPUT)
                 .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         if (mediaController != null) {