Merge "Limit the size of NotificationChannel and NotificationChannelGroup" into rvc-qpr-dev am: a15093de am: 5415ede5 am: dc9fe11d am: eb814b0f am: b94d473e am: 9f89e816

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19696124



Change-Id: I52acd9d8f1f954ae9926d7e48fa1cfb53f77b22c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>