Merge "Add spring animation when stashing transient taskbar." into tm-qpr-dev am: ba85154590 am: 9c0ad5f746

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22178236

Change-Id: Ibec649f0c7d6181ac52e2067898fe4b0b82f01a2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>