Fix issue with TV PIP clobbering resize on orientation change.

- When the device rotates due to a test that requests a specific
  orientation, the TV PiP logic was resizing the state back to
  mDefaultPipBounds, which doesn't change depending on orientation change,
  clobbering the bounds in the new orientation that were calculated in WM.
  Since TV does not really care about the rotation case, we can just
  ignore the configuration changes due to orientation changes for the sake
  of passing the common CTS tests across handhelds and TV.

Bug: 38246863
Test: android.server.cts.ActivityManagerPinnedStackTests
Change-Id: Id7988a0b02f14f67908d3202cdd73b186d9fea16