Merge "Play return to icon animation if user swipes back to All Apps." into sc-v2-dev am: 52ee4ec4aa

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16194658

Change-Id: If13ed6d01cd440182338c18f8317f691b9d7d33e