Prefer default orientation for secondary displays

For existing use-cases secondary displays should not be influenced by
things like orientation sensors, docking mode, etc. This CL makes
WindowManagerPolicy prefer default orientation when calculating
rotation for non-default displays.

Bug: 72447212
Test: Rotate phone to landscape, start Android Auto Projected.
Change-Id: I1934085d32096aa9c1a2b8f7f62c26b7480dd13d