Merge "Include widget padding & boarder spacing in widget preview size estimation" into sc-dev am: 5063805a4e am: d4e862e826 am: 6d85030138

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14830785

Change-Id: I656e8af97b4e7c6a52f4cb452139a75faa1bbdea