[automerger skipped] Implement animateNavBarLongPress for stashed taskbar. am: 1b6a08abd6 -s ours

am skip reason: Merged-In I6ecbc849ac1c066a4c018325f0237a61641d99aa with SHA-1 3a7a76f88e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/27235887

Change-Id: I3646a2ce719314c0308637d61bb6a1319196cac6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>