Drop the 'initial' of suppressInitialNotification API

Relax the 'initial' bit of this API, i.e. apps could update a bubble
to 'suppress notification' and if their app is foreground, we would
remove the notification (but not the bubble).

Bug: 123542531
Test: incoming....
Change-Id: I256112c7a560e26ebc00efb11435298922bec11c
3 files changed