[automerger skipped] DO NOT MERGE - Disallow deletion of channels with FGS notifications am: 8cb7e0a8 am: 69a77a41 am: 9765e6c5 -s ours am: b27dfc8b -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13533155

Change-Id: I866cc08f684e165c23d22843ee458e35e40654d0