Merge "Exact widget sizes functionalities into an utility class" into sc-dev am: 84fe7e3a1e am: 1256ae4746

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14881307

Change-Id: I3d2a0aaebc155e1c7fe0667dfe8549a3fc25f97d