rhi: Depth clip (clipping based on distance) is inconsistent in D3D vs. the others

DepthClipEnable in https://docs.microsoft.com/en-us/windows/win32/api/d3d11/ns-d3d11-d3d11_rasterizer_desc should have been set to TRUE. This would match other backends. Currently it is zeroed out, so it is FALSE.

Metal defaults to MTLDepthClipMode.clip, while Vulkan has depth clip enabled unless VkPipelineRasterizationDepthClipStateCreateInfoEXT is used to control it (we do not use it).