Merge "Disallow long press below taskbar icons" into tm-dev am: 8e0177813a

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17872520

Change-Id: I04507f80a451a1d3eff5e8a15667718afd106b91
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>