Merge "Accessibility bug fixes for the snack bar" into sc-dev am: 3b54044300 am: b02ca15d3b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15225870

Change-Id: Ied4fc4768cf5895cd684e38d84b529bcbca19e59