GraphQL config is not loaded from package.json in graphql-language-service-server

GraphQL configuration is loaded from `.graphqlrc` files, `graphql.config.js` files and other `.rc` or `.config` files, but not from the `graphql` key in `package.json`.
This is an upstream issue with the `graphql-config` module, which is overriding the default `cosmiconfig` search paths, and it's being tracked here:
https://github.com/kamilkisiela/graphql-config/issues/692