SWG-7517 covering another case

Author: Milosz Tarka

modules/swagger-codegen/src/main/java/io/swagger/codegen/v3/config/CodegenConfigurator.java

@@ -620,8 +620,7 @@ public ClientOptInput toClientOptInput() {
                     .openAPI(openAPI);
 
             if (config.needsUnflattenedSpec()) {
-                ParseOptions optionsUnflattened = new ParseOptions();
-                optionsUnflattened.setResolve(true);
+                ParseOptions optionsUnflattened = buildUnflattenedParseOptions();
                 SwaggerParseResult resultUnflattened = new OpenAPIParser().readLocation(sanitizedSpecificationUrl, authorizationValues, optionsUnflattened);
                 OpenAPI openAPIUnflattened = resultUnflattened.getOpenAPI();
                 config.setUnflattenedOpenAPI(openAPIUnflattened);