Adding support for customize highlight region in preference

> Also fixing notification dots setting not getting highlighted

Bug: 184747760
Test: Manual
Change-Id: Ic9c2bfbb9750bed60afc14e824181f650c8cff33

src/com/android/launcher3/settings/NotificationDotsPreference.java

@@ -85,6 +85,12 @@ public class NotificationDotsPreference extends Preference
                 Settings.Secure.getUriFor(NOTIFICATION_ENABLED_LISTENERS),
                 false, mListenerListObserver);
         updateUI();
+
+        // Update intent
+        Bundle extras = new Bundle();
+        extras.putString(EXTRA_FRAGMENT_ARG_KEY, "notification_badging");
+        setIntent(new Intent("android.settings.NOTIFICATION_SETTINGS")
+                .putExtra(EXTRA_SHOW_FRAGMENT_ARGS, extras));
     }
 
     private void updateUI() {