Merge tag 'android-security-11.0.0_r51' into staging/lineage-18.1_merge-android-security-11.0.0_r51

Android security 11.0.0 release 51

* tag 'android-security-11.0.0_r51':
  Add FLAG_IMMUTABLE to PendingIntent in LegacyModeSmsHandler.
  Revert submission

Change-Id: Ie57097ddfcf7355e12fa511b076ae5cdb9c3764f