Merge "Prevent dropping a drag from TaskbarAllApps in Overview" into tm-qpr-dev am: 50306445a1 am: f47e27ee4f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20324839

Change-Id: I6c456545cba82946f5a92d4e7a1bcaa8b14c4d0b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>