VoipCallMonitor updates; stopFGS when notifs are removed am: 1feb0f28 am:...

VoipCallMonitor updates; stopFGS when notifs are removed am: 1feb0f28 am: f0f0d676 am: ca70670e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/23619482



Change-Id: Ic7ad3e7b03ab3ea7ebe47d27b10b51ee025d23f0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>