Merge tag 'android-9.0.0_r49' into staging/lineage-16.0_merge-android-9.0.0_r49

Android 9.0.0 Release 49 (5794013)

* tag 'android-9.0.0_r49':
  Treat mode_default as denied for install_unknown_apps
  [RESTRICT AUTOMERGE] Make ScreenPinningSettings behaviour consistent with LockTaskController.
  Do not allow draw on top for App notification settings
  Do not allow draw on top for default sms picker.
  Hide quicksetting tile for dev options when it's turned off
  Update PBAP info for all pairing dialogs. DO NOT MERGE
  Hide SettingsSlice provider
  Disable changing lock when device is not provisioned.

Change-Id: I705fc2d3c72ea97721d4640a639078c18fbe5ac5