Always force update the transform when calling from RecentsImpl.

- Workaround for crash in RecentsImpl where we could be retrieving the
  transform for a task that is not at the front of the stack (can happen
  if time changes, etc.)  However, since we only use the size for the
  transition, we can always force-update the transform.

Bug: 27849282
Change-Id: I86eee4c158748e4f13a2daeac5cf040c0874f967