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

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

Change-Id: Ie000b36c9050d538acffc1b4fbef1f16f0ef9fd5