Merge "[Overview Sharing] Turn on the feature flag for overview sharing." into sc-dev am: 5354abb0e7 am: 7b33d321e9 am: 3360fc0f10

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14342901

Change-Id: I590e31dd572e8da466d92d4d9fdf5c5814c5677c