Merge "DO NOT MERGE - Disallow deletion of channels with FGS notifications" into rvc-dev am: 68a604b

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

Change-Id: I919b0c3ec34d7c0eb0384a65be961d9191429f1b

Author: Chris Tate