Merge "Add null check for recents when tapping on Taskbar icons" into tm-qpr-dev am: f51426a6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21701337



Change-Id: I6f299319cac89a12e66c054d9baa39e1107c7651
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>