Fix a couple issues with overview to home transition

- In fake portrait, fade out instead of translating offscreen, as
  the orientation doesn't map to where RecentsView actually lives
- From OverviewModalTaskState, start from > 1 scale, and use
  OverviewToHomeAnim (to ensure RecentsView doesn't fade out etc)
  - To keep parameter list sane, added RecentsParams to
    AnimatorControllerWithResistance which has the new startScale
    (set to current scale for modal state) and renames the old
    RecentsParams to RecentsResistanceParams. Sorry if that's
    confusing.

Bug: 144170434
Change-Id: Id36ebde440b398159cef50d95822627fca761527
Merged-In: I437f0d18cad4c94feea25954aed3390acedcaed5