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

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

Change-Id: I67421d7ffd28b6add3a5034817d269d98a50743f