Merge "Don't allow Taskbar unstash during Assistant gesture" into udc-dev am: e2a6113e

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



Change-Id: Ie409a091a427f3b9ca4ef88843b3714c3028b6dc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>