Merge "Ensure that animated key button drawable has callbacks" into rvc-dev am: acf0750084 am: 7ba833e373 am: 553bcea3da

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12145664

Change-Id: I78bda6e96c087f93d7c9854387f1ac9fa44e600a