Merge "Add a content description for the widget reconfigure button." into sc-dev am: 0dfabe0a1e am: 030e9dcb57 am: e319b9bfb4

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

Change-Id: I128d0ded7752654d5b0f6798b3db8d013e2f4044