Merge "Defer some heavy work from final frame of app -> home transition" into sc-dev am: b9e275d233 am: c3a4d4d2d2 am: dba50afb4c

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

Change-Id: Id9b8e79d66e27fc32b7cc6fa35be22b5c375c303