Merge "Clean up existing a11y listeners when reparenting." into rvc-dev am:...

Merge "Clean up existing a11y listeners when reparenting." into rvc-dev am: 4d3059c0 am: 2e7a1c94

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11707943

Change-Id: I0ff73b391b1f24959a6587634a94c58aded0b79f