Merge "Add a content description for the widget reconfigure button." into sc-dev am: 0dfabe0a1e am: c9565c2444

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14690881

Change-Id: I5b791e55d110ecd4fa33652b31f5759017ce6f64