Merge "Use falllback animation when going back to no icon" into sc-v2-dev am: 1ad55e6ab5 am: c2a7481cd4

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15933204

Change-Id: I98653e32664f8e90c77af3654c62a34b771c6653