Ensure notif-based bubbles don't occur once and for all!! & improve logging

* Move filtering of intent into NotificationManagerService
* Add Log.w messages when an activity isn't configured correctly
* Updates tests so that they will still pass
* Add tests for badly-configured bubbles

Test: atest NotificationManagerTest (other CL)
Test: manual - send a badly configured bubble and note the logs & that
      it doesn't appear
Fixes: 132913407
Change-Id: I3b3e2d63b34fe51f1aea178a92f567b6b3e0b927