Merge "Scale widget previews" into sc-v2-dev am: b3880636c4 am: 6d95608cc9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15177218

Change-Id: I1f2e80152aa8dfd952a91652db808af0d2fa35c4