fix(mongoose): correctly handle destructured isValidObjectId

Fix #11304
Re: #11305

Author: vkarpov15

lib/index.js

@@ -955,8 +955,9 @@ Mongoose.prototype.ObjectId = SchemaTypes.ObjectId;
  */
 
 Mongoose.prototype.isValidObjectId = function(v) {
+  const _mongoose = this instanceof Mongoose ? this : mongoose;
   try {
-    new this.Types.ObjectId(v);
+    new _mongoose.Types.ObjectId(v);
   } catch (err) {
     return false;
   }