Before we just assumed that the calls here would match the corresponding flag value (D3D11_RESOURCE_MISC_SHARED -> ::GetSharedHandle, D3D11_RESOURCE_MISC_SHARED_NTHANDLE -> ::CreateSharedHandle), but it turns out that its possible to set both flags and use both methods. Now we always tell Vulkan to export a KMT handle if D3D11_RESOURCE_MISC_SHARED is present, and use openKmtHandle to get an NT handle when needed.
Since the bind flags of the texture may not always match the
image usage flags of the underlying Vulkan image, we should
use the latter to check whether a view can be created.
