WM: Add a crop to touchable region if needed

When populating the touchable region, check whether we should crop to stack bounds. With the
introduction of public SurfaceControl, users can position the surface outside of the bounds
its parents. SurfaceFlinger will ensure that regions outside its parents are not drawn but
the surface may still consume touch input.

Setting the crop will ensure that we crop the touch region to the specified surface.

Bug: 123992966

Test: go/wm-smoke
Test: manual input tests and check winscope trace
Change-Id: I4426500ea0a70a6b511cb26b4f9cdf5e0bcbac3f