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

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

Change-Id: Ia47dd2ddb1f3ac8f337f728aa11b5ad985000516