[automerger skipped] Merge "DO NOT MERGE - Disallow deletion of channels with FGS notifications" into pi-dev am: 1735cdeea4 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13743878

Change-Id: I0910dc5753819e3c8e64cfe484a698f6d9be3275