Merge "Add TAPL test that dismissing focused task causes next task to become focused." into sc-v2-dev am: 1bf753f7a6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15947750

Change-Id: Id67d2342b0715896faa6832e59116b6ea42fcf05