Fix letterbox in fixed rotation transform

- Use rotated bounds as outer frames of letterbox.
- Make sure app bounds related configuration is always
  computed by resolved bounds, so the app bounds won't
  keep a intermediate result while the parent hasn't
  rotated yet.
- Fix freeform size compat activity cannot move outside
  of display left side.

Fix: 151134392
Test: SizeCompatTests#testLaunchWithFixedRotationTransform
      testKeepBoundsWhenChangingFromFreeformToFullscreen

Change-Id: I0615aa4629eefcb1f666482258f6032fe3e89def