Merge "Accessibility bug fixes for the snack bar" into sc-dev am: 3b54044300 am: 7184a3b5d2

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

Change-Id: I793204d7a29eace6889184e75ab8a7ec8a205b05