lib: fix ImportModuleDynamicallyCallback return type declaration

lib/internal/modules/esm/loader.js

@@ -323,7 +323,7 @@ class ModuleLoader {
    * @param {string} source Source code. TODO(joyeecheung): pass the raw buffer.
    * @param {string} isMain Whether this module is a main module.
    * @param {CJSModule|undefined} parent Parent module, if any.
-   * @returns {{wrap: ModuleWrap, namespace: ModuleNamespaceObject}}
+   * @returns {{wrap: ModuleWrap, namespace: import('internal/modules/esm/utils').ModuleNamespaceObject}}
    */
   importSyncForRequire(mod, filename, source, isMain, parent) {
     const url = pathToFileURL(filename).href;

lib/internal/modules/esm/utils.js

@@ -101,12 +101,18 @@ function getConditionsSet(conditions) {
   return getDefaultConditionsSet();
 }
 
+/**
+ * @typedef {{
+ *   [Symbol.toStringTag]: 'Module',
+ * }} ModuleNamespaceObject
+ */
+
 /**
  * @callback ImportModuleDynamicallyCallback
  * @param {string} specifier
  * @param {ModuleWrap|ContextifyScript|Function|vm.Module} callbackReferrer
  * @param {Record<string, string>} attributes
- * @returns { Promise<void> }
+ * @returns {Promise<ModuleNamespaceObject>}
  */
 
 /**