Merge "Revert "Revert "Ringer mode button state a11y""" into udc-dev am: 66e2d492

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23616816



Change-Id: I88a2d33a47019b44f03e57394c08286dbcade9c4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>