Forcefully move focused task to front when triggering the recents animation in 3-button nav

Quickly tapping the recents button can start a recents animation while a quick switch is running. This causes the the wrong page index to be used as the focused task index.

Test: manual on large screen
Fixes: 227562351
Change-Id: If99f74477e52ed0c7f7c5fd7b3dc8b201627068b