Merge "Limit the size of NotificationChannel and NotificationChannelGroup" into sc-dev am: 6457ae8d4c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19697196

Change-Id: I9e9aff53dd5c38c32f247ef0f67b843f29505f37
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>