Merge tag 'android-9.0.0_r46' into staging/lineage-16.0_merge-android-9.0.0_r46

Android 9.0.0 Release 46 (PQ3A.190801.002)

* tag 'android-9.0.0_r46':
  DO NOT MERGE Add flag to default dialer change dialog
  Prevent TelecomManager#endCall from ending emergency calls.

Change-Id: Iaee935edf8507d6be69c95678b3612dde7604608