Merge "Play fallback animation when overlay is shown." into sc-v2-dev am: 44fcfa5bfd am: c6aa4b006a

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16202910

Change-Id: Ia4fd2252ce84dd4a8ebca7c34060a54fa2f1eb57