Gatsby Config requires definition for "apiHost"

[stbly]

After updating to gatsby-source-sanity v7.9.0, node started throwing an obscure error right after Gatsby's onPreInit hook:

success onPreInit - 0.003s
info [sanity] Fetching remote GraphQL schema
error Cannot read properties of undefined (reading 'split')

I was eventually able to figure out that it was because apiHost was reading as undefined in the Sanity config. I didn't see anything in the documentation saying this needed to be provided in gatsby-config.js, but after adding it everything ran fine:

{
      resolve: 'gatsby-source-sanity',
      options: {
        ...
        apiHost: 'https://api.sanity.io',
        ....
      },
    },
}

I was also able to replicate this issue by starting a new gatsby project using Sanity as a source.

Node Version: v18.12.1