lib: make process.moduleLoadList a copy of the internal value

process.moduleLoadList was provided as-is instead of a copy of it

Refs: nodejs#41233
Refs: nodejs#61276

Author: Xstoudi

lib/internal/bootstrap/realm.js

@@ -74,10 +74,9 @@ const {
 const moduleLoadList = [];
 ObjectDefineProperty(process, 'moduleLoadList', {
   __proto__: null,
-  value: moduleLoadList,
-  configurable: true,
+  get() { return ArrayPrototypeSlice(moduleLoadList); },
   enumerable: true,
-  writable: false,
+  configurable: true,
 });
 
 

test/parallel/test-process-moduleloadlist.js

@@ -0,0 +1,7 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+
+assert.ok(Array.isArray(process.moduleLoadList));
+assert.throws(() => process.moduleLoadList = 'foo', /^TypeError: Cannot set property moduleLoadList of #<process> which has only a getter$/);