VoipCallMonitor updates

In order of importance
- Do not revoke FGS the call-style notification is removed
  for an ongoing call
- Change mNewCallsMissingCallStyleNotification list to queue
- Only clear the mNewCallsMissingCallStyleNotification if a
  notification is posted for the new Or FGS is stopped for the app
- use the same TAG for the NotificationListener and VoipCallMonitor

Flag: com.android.server.telecom.flags.voip_call_monitor_refactor
Bug: 389898878
Test: new unit test -
      atest com.android.server.telecom.tests.VoipCallMonitorTest#
      test2CallsInQuickSuccession
Change-Id: Iecc8ecfd6376772ba42651d24198b81cf80a6f31
3 files changed