Merge "[DO NOT MERGE] Make screenshot error notification PendingIntent immutable" into rvc-dev am: 9c62f07486

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13519315

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I906326adab8ee3de29aec6c04e872c88862d61dc