Merge "Add hidden flag for allowing system app to use BAL permission to launch pending intent in background" into tm-dev am: 9cb2bb4e am: cb9bd3a1 am: 8dd33829 am: a6570dc8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18486605



Change-Id: Ia30c07a6056deb3d6b0d17b6630a2cbb0dccc6fa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>