[automerger skipped] Merge "[DO NOT MERGE] Make screenshot error notification PendingIntent immutable" into sc-dev am: d9ed1aa9 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13518404

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I65f3294f2efbf6ffc3637a65a916ea74433debd8