Merge "Overview - leave modal state on orientation changes." into sc-v2-dev...

Merge "Overview - leave modal state on orientation changes." into sc-v2-dev am: 07e74119 am: 48d050ee

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15379173

Change-Id: Ie78145a46f21e9657976235ac5684d27d5a5ef27