Merge "Include widget padding & boarder spacing in widget preview size estimation" into sc-dev am: 5063805a4e am: 01f33917f1 am: 738e82e4ab

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

Change-Id: I8203c60ad0bc473c8d7bad0cee749f8da27354f8