Debugging wasm multi thread

[laifharwood]

I have a project created from the wasmbrowser template in .net 9. It's using multi threading. I think I need this fix to debug the project through Visual Studio but it isn't included in a release of the dotnet sdk. Was thinking I could build my own version of the sdk from source, and have pulled down the runtime and sdk repos and built them but not sure how I can build the sdk that includes the runtime from source. How can I do this or is there a different approach I should be taking?