[Launcher Jank] Avoid SimpleBroadcastReceiver making binder calls on main thread

Fix: 348649441
Flag: NONE - jank fix
Test: manual - presubmit
Change-Id: Ie97713f3f0b1f117662d49c6d6a65651c593d424

src/com/android/launcher3/pm/UserCache.java

@@ -93,12 +93,12 @@ public class UserCache implements SafeCloseable {
 
     @Override
     public void close() {
-        MODEL_EXECUTOR.execute(() -> mUserChangeReceiver.unregisterReceiverSafely(mContext));
+        MODEL_EXECUTOR.execute(() -> mUserChangeReceiver.unregisterReceiverSafelySync(mContext));
     }
 
     @WorkerThread
     private void initAsync() {
-        mUserChangeReceiver.register(mContext,
+        mUserChangeReceiver.registerSync(mContext,
                 Intent.ACTION_MANAGED_PROFILE_AVAILABLE,
                 Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE,
                 Intent.ACTION_MANAGED_PROFILE_REMOVED,