Ensure that SysUI & listeners get the newly updated bubble state

This CL fixes two issues:

1) When bubbles are posted we should note that the notification has
   interrupted
2) When the bubble flag state changes it gets propagated to any listeners

Fixes: 131187135
Test: atest NotificationManagerServiceTest
Change-Id: I003a36b9938a4d1f4a69efea463a39fd0df1abda