Merge "Refocus conversation expand button in TalkBack" into rvc-dev am: 2c99d907 am: a9c633d2 am: 10b7eea1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11678253

Change-Id: I39c1de40490a36f19951e295edbff64891bb1ddd