Don't auto expand the bubble when it's marked as priority

Bug: 186684456
Test: manual - get a convo notif that can bubble
             - mark it as priority
             => notice the bubble is created but not auto-expanded
Change-Id: I4eec565bb1e32cbe4a53fa1e7db73f35fbabe730

packages/SystemUI/src/com/android/systemui/wmshell/BubblesManager.java

@@ -675,7 +675,6 @@ public class BubblesManager implements Dumpable {
         }
         try {
             int flags = Notification.BubbleMetadata.FLAG_SUPPRESS_NOTIFICATION;
-            flags |= Notification.BubbleMetadata.FLAG_AUTO_EXPAND_BUBBLE;
             mBarService.onNotificationBubbleChanged(entry.getKey(), true, flags);
         } catch (RemoteException e) {
             Log.e(TAG, e.getMessage());