Merge "Add accessibility announcement when user clicks on 'Add automatically to home screen' button" into sc-dev am: 972ab9327c am: fc98f27759 am: 2d321902af

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15242979

Change-Id: I42551ef3e6cf5af8d599e761ce123d26888946ff