message: use graphql-config legacy mode by default
  since many of the folks using `.graphqlrc` files still are dealing with abstractions that don't make it easy to provide LSP settings for config request, i think we should just make this the default for now.
diff: @@ -141,7 +141,8 @@ export class MessageProcessor {
  this._tmpDir = tmpDir || tmpdir();
  this._tmpDirBase = path.join(this._tmpDir, 'graphql-language-service');
  this._tmpUriBase = URI.file(this._tmpDirBase).toString();
  - this._loadConfigOptions = loadConfigOptions;
  + // use legacy mode by default for backwards compatibility
  + this._loadConfigOptions = { legacy: true, ...loadConfigOptions };
  if (
  loadConfigOptions.extensions &&
  loadConfigOptions.extensions?.length > 0
  