Merge "Don't allow Taskbar unstash during Assistant gesture" into udc-dev am: e2a6113e93 am: 39748f8883

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23565985

Change-Id: I26e34597aa96c2eb304ef40404b4492faf7f1074
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>