Merge "Wrap the widget preview of the add item sheet with a scroll view" into sc-v2-dev am: 3572c9100a am: cf5b5f3a9f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15235235

Change-Id: Iff8ca24aef55f8a3bf77c97341fb019aeef7638a