Also reverse rotation for #freezeRotation path

When auto-rotation is disabled, users can apply the suggested rotation
using the rotation icon from SysUI. The sensor value passed to
DisplayRotation#freezeRotation(int) that comes from
WindowManagerService#freezeDisplayRotation also needs to apply the
same reversing logic as DisplayRotation#rotationForOrientation.

Fixes: 275286150
Test: atest DisplayRotationTests
Test: atest RotationUtilsTest
Change-Id: I985ae560d8eff6ea063206c1e39bd694ab576fde