fix: avoid pulling non-schema paths from documents into nested paths

Re: #10449

Author: vkarpov15

lib/helpers/document/compile.js

@@ -188,13 +188,7 @@ function getOwnPropertyDescriptors(object) {
   const result = {};
 
   Object.getOwnPropertyNames(object).forEach(function(key) {
-    result[key] = Object.getOwnPropertyDescriptor(object, key);
-    // Assume these are schema paths, ignore them re: #5470
-    if (result[key].get) {
-      delete result[key];
-      return;
-    }
-    result[key].enumerable = [
+    const skip = [
       'isNew',
       '$__',
       'errors',
@@ -205,6 +199,12 @@ function getOwnPropertyDescriptors(object) {
       '__index',
       '$isDocumentArrayElement'
     ].indexOf(key) === -1;
+    if (skip) {
+      return;
+    }
+
+    result[key] = Object.getOwnPropertyDescriptor(object, key);
+    result[key].enumerable = false;
   });
 
   return result;