Merge "Defer some heavy work from final frame of app -> home transition" into sc-dev am: b9e275d233 am: 65b0ca7873

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

Change-Id: I0558d7ba9cd94d0b5048e96595d62ee62004f547