fix: Two restore options when an archived document is deleted (#2194)

* Merge two menu items

* Add deletedAt guard condition in document unarchive policy

* Make the parentDocumentId null

* Update test

server/models/Document.js

@@ -637,7 +637,7 @@ Document.prototype.unarchive = async function (userId: string) {
         },
       },
     });
-    if (!parent) this.parentDocumentId = undefined;
+    if (!parent) this.parentDocumentId = null;
   }
 
   if (!this.template) {