make not configurable

Author: Xstoudi

lib/internal/bootstrap/realm.js

@@ -85,7 +85,7 @@ const loadedModules = [];
 ObjectDefineProperty(process, 'loadedModules', {
   __proto__: null,
   get() { return ArrayPrototypeSlice(loadedModules); },
-  configurable: true,
+  configurable: false,
   enumerable: true,
 });