Merge "Limit the size of NotificationChannel and NotificationChannelGroup" into rvc-dev am: 04ccf69df1 am: 6155a1779b am: c08dd8f0a8 am: 695d9cce2c am: 3e7871d10e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19697197

Change-Id: Ib9213f9e51390a5ba995f15f8b0de0b48c8eedee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>