Merge "Accessibility bug fixes for the snack bar" into sc-dev am: 3b54044300 am: b2b6cefbee

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

Change-Id: I25e2ac788bcd15fe01e81c4996a77729da460790