Merge "Include widget padding & boarder spacing in widget preview size estimation" into sc-dev am: 5063805a4e am: ca0eaa179a

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

Change-Id: I977a610121ea85a7218239dd4708534a219b12c5