Merge "Fix NPE in FallbackSwipeHandler when getRunningTask() returns null" am: 78e1964a05 am: d693b1406a am: 2b22bb33ff

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/2361489

Change-Id: Id655da41ef37252c060ff7722966e0fc4e06b4d0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>