Merge tag 'android-11.0.0_r4' into staging/lineage-18.0_merge-android-11.0.0_r4

Android 11.0.0 Release 4 (RP1A.201005.004)

* tag 'android-11.0.0_r4':
  Support dispatchNullEvent virtual method
  Do not leak dump objects.
  Make non-blockable notification more robust
  Notify IORap without including packages for secondary dex opt.
  Mark implicit PendingIntents as immutable
  Add missing isShellUser check

Change-Id: I589dbce1c50ee3f39583ce6a0f2b30e8487acd69