Call showCurrentTask again if applyLoadPlan doesn't include running task

Test: swipe up from an app that has excludeFromRecents=true, e.g.
Volume Dialog, Home quick settings tile, and Routines widget; ensure
the gesture works as expected (e.g. can quick switch, go home, or to
overview with all tasks visible).
Flag: none
Fixes: 324495241

Change-Id: If3b61f7d1725ee573fad38140bfeb77f3a6cea1e