Merge "Use WidgetSizes to estimate widget size instead of custom calculation" into sc-dev am: 4716ab3037 am: 9057adfb2b am: 06f050239d

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

Change-Id: I04f613bdb7a789034b1c393d3b3e2f7905bfa397