message: Add operation name to introspection query
diff: @@ -505,7 +505,12 @@ export class GraphiQL extends React.Component {
  _fetchSchema() {
  const fetcher = this.props.fetcher;
  - const fetch = observableToPromise(fetcher({ query: introspectionQuery }));
  + const fetch = observableToPromise(
  + fetcher({
  + query: introspectionQuery,
  + operationName: 'IntrospectionQuery',
  + }),
  + );
  if (!isPromise(fetch)) {
  this.setState({
  response: 'Fetcher did not return a Promise for introspection.',
  @@ -524,6 +529,7 @@ export class GraphiQL extends React.Component {
  const fetch2 = observableToPromise(
  fetcher({
  query: introspectionQuerySansSubscriptions,
  + operationName: 'IntrospectionQuery',
  }),
  );
  if (!isPromise(fetch)) {
  