Simplify getTaskViewAt call am: 9d6fb64f45 am: acf07f338e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16249427

Change-Id: I3d70d53fbc0dd1f9bfe4c5283d53fc795a7c3e9b