Merge "Launcher changes for go/widget-size-specification" into sc-dev am: 4fb5d4d3ca

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13473552

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I35f37899494dc6c02be82668e27e0c4b044ccc5a