fix(): fix accidental breaking change (subgraphs import)

Author: kamilmysliwiec

lib/utils/transform-schema.util.ts

@@ -2,7 +2,6 @@
 // The changed lines are 31-40 and 85-87 and the original file can be found here:
 // https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo-graphql/src/schema/transformSchema.ts
 
-import '@apollo/subgraph/dist/schemaExtensions';
 import {
   GraphQLFieldConfigArgumentMap,
   GraphQLFieldConfigMap,
@@ -27,6 +26,16 @@ import {
   isUnionType,
 } from 'graphql';
 
+declare module 'graphql/type/definition' {
+  interface GraphQLObjectType {
+    resolveReference?: any;
+  }
+
+  interface GraphQLObjectTypeConfig<TSource, TContext> {
+    resolveReference?: any;
+  }
+}
+
 type TypeTransformer = (
   type: GraphQLNamedType,
 ) => GraphQLNamedType | null | undefined;