Merge "Adjust padding, margin of tabs in the WidgetsFullSheet" into sc-dev am: 1002981fd7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14602830

Change-Id: Ie0e8f4ad81dc0be9db4b79c29b98d7162af4171e