[automerger skipped] DO NOT MERGE - Disallow deletion of channels with FGS notifications am: 8cb7e0a881 am: c3a36e5830 -s ours

am skip reason: subject contains skip directive

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

Change-Id: Idaf3254b85a0d96bb43882249f9a7844b951e9ae