Merge "Fix Talkback focus to the background" into tm-dev am: d09e8af2 am: 26a3e77b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18467059



Change-Id: I28fe44c54e336918c3cca49106b49944655118c5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>