PackedSimd fails to find interpreter intrinsic

[lewing]

if (PackedSimd.IsSupported)
{
    Console.WriteLine("Packed SIMD is supported.");
    Vector128<nint> vector1 = Vector128<nint>.One;
    Vector128<nint> vector2 = Vector128<nint>.Zero;
    var vector3 = PackedSimd.Add(vector1, vector2);
    Console.WriteLine($"Vector3: {vector3}");
}

The lookup validation fails for MONO_TYPE_U and MONO_TYPE_I

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/area-system-runtime-intrinsics
See info in area-owners.md if you want to be subscribed.

[dotnet-policy-service]

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.