Merge "Use WidgetSizes to estimate widget size instead of custom calculation" into sc-dev am: 4716ab3037 am: 9057adfb2b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14881309

Change-Id: I06a7f3438b1864afb5a21f02b9985eb9a4a04625