Close panel immediately on launch animation end

Otherwise the activity will launch, then the window will quickly flip
back to the fully expanded shade and make the user watch the collapse
animation before finally showing the activity that was started.

This path only occurs when the keyguard is unlocked, and triggers the
remote occlude animation to run.

Fixes: 234577570
Test: manual, use face unlock without bypass, unlock the lockscreen,
then start an occluding activity (controls, maps)

Change-Id: Ifcb59cce810c81e607d5fe83389d282100ef7236