Merge "Fix crash when hotseat icon is dragged onto Workspace" into sc-v2-dev am: ce10de7964

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15771582

Change-Id: Ie51e47b2db3ab8a7f121490ef1b8a739f47542f7