Fix wrong transition when dock minimized and docked app launched

When having an app docked and then going home, and then launching
the app from the homescreen, we had a wrong transition because
getTopMost task was already set to the launched app, because
getRunningTasks doesn't exclude the docked stack. Instead of adding
flags for getRunningTasks, which sounds risky, we just pass a "force"
value when we launch recents in this state.

Bug: 27154882
Change-Id: Iee4512fed13115dbbe8b74413ff1fa9b87afa0ef