Auto-expand the bubble when created via bubble-button

Fixes: 154225344
Test: manual - tap on bubble button from HUN -> bubble auto-expands
             - tap on bubble button from expanded notif in shade ->
               bubble auto-expands
Change-Id: I058696d5cbc6bac12f047e85a795474b8bf62d1d

packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java

@@ -894,6 +894,7 @@ public class BubbleController implements ConfigurationController.ConfigurationLi
         // Update the state in NotificationManagerService
         try {
             int flags = Notification.BubbleMetadata.FLAG_SUPPRESS_NOTIFICATION;
+            flags |= Notification.BubbleMetadata.FLAG_AUTO_EXPAND_BUBBLE;
             mBarService.onNotificationBubbleChanged(entry.getKey(), shouldBubble, flags);
         } catch (RemoteException e) {
         }