Merge "Defer some heavy work from final frame of app -> home transition" into sc-dev am: b9e275d233 am: c3a4d4d2d2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14518196

Change-Id: Ib2db3afa25de455dca284f94e4d35a98cd063964