I'm trying to access the nhost client from an external service (cloud run). I'm getting ECONNREFUSED and found some threads talking about different ways of innstantiating the client, either with backendUrl or subdomain/region. We are currently using backendUrl per this issue (https://github.com/nhost/nhost/issues/1055) but I'm not sure if that's changed. Do we need to switch to subdomain region to be able to access the client in production? The backendUrl has been working for local development.