Merge "Add a11y titles for taskbar windows." into tm-qpr-dev am: 50b3b62e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20239440



Change-Id: If23159090c979589410bd41a1c82ceb28e70582f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>