Merge "Ringer mode button state a11y" into udc-dev am: d1e6064e am: d48cff57 am: 3ee1de54 am: e5aea5fb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23535497



Change-Id: I67ffd3dabf3b4c85129d8447e25455ad4f566746
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>