XFA - Handle shorcut in SOM expression (issue #13994)

src/core/xfa/som.js

@@ -15,6 +15,7 @@
 
 import {
   $appendChild,
+  $getChildren,
   $getChildrenByClass,
   $getChildrenByName,
   $getParent,
@@ -37,7 +38,12 @@ const operators = {
 };
 
 const shortcuts = new Map([
-  ["$data", (root, current) => root.datasets.data],
+  ["$data", (root, current) => (root.datasets ? root.datasets.data : root)],
+  [
+    "$record",
+    (root, current) =>
+      (root.datasets ? root.datasets.data : root)[$getChildren]()[0],
+  ],
   ["$template", (root, current) => root.template],
   ["$connectionSet", (root, current) => root.connectionSet],
   ["$form", (root, current) => root.form],

test/pdfs/xfa_issue13994.pdf.link

@@ -0,0 +1 @@
+https://github.com/mozilla/pdf.js/files/7138335/Form_MGT-14-try-1.pdf

test/test_manifest.json

@@ -1277,6 +1277,15 @@
        "enableXfa": true,
        "type": "eq"
     },
+    {  "id": "xfa_issue13994",
+       "file": "pdfs/xfa_issue13994.pdf",
+       "md5": "787ad7cfbb822bb4f80e2243305c9f0c",
+       "link": true,
+       "rounds": 1,
+       "lastPage": 1,
+       "enableXfa": true,
+       "type": "eq"
+    },
     {  "id": "xfa_issue13855",
        "file": "pdfs/xfa_issue13855.pdf",
        "md5": "0aaaf62ff979c7837c2c63df44456238",