Handle mid recents transition in desktop

When a freeform launch happens during the middle of the recents
transition, we should handle it so that the task gets launched in
fullscreen instead of in desktop.

Fix: 327447672
Fix: 354171747
Flag: EXEMPT Bugfix
Test: atest DesktopTasksControllerTest
Change-Id: If6192975e1d25fbdac774e9bbf71f6828e194e44
3 files changed