fix initial state of checkboxes in display layer (#12904)

consider the export value when multiple checkboxes have the same name

src/display/annotation_layer.js

@@ -874,7 +874,10 @@ class CheckboxWidgetAnnotationElement extends WidgetAnnotationElement {
     const data = this.data;
     const id = data.id;
     const value = storage.getOrCreateValue(id, {
-      value: data.fieldValue && data.fieldValue !== "Off",
+      value:
+        data.fieldValue &&
+        ((data.exportValue && data.exportValue === data.fieldValue) ||
+          (!data.exportValue && data.fieldValue !== "Off")),
     }).value;
 
     this.container.className = "buttonWidgetAnnotation checkBox";

test/pdfs/issue12716.pdf.link

@@ -0,0 +1 @@
+https://github.com/mozilla/pdf.js/files/5670936/form-cms1500.pdf

test/test_manifest.json

@@ -5038,5 +5038,15 @@
       "rounds": 1,
       "type": "eq",
       "forms": true
+    },
+    {
+      "id": "issue12716",
+      "file": "pdfs/issue12716.pdf",
+      "md5": "9bdc9c552bcfccd629f5f97385e79ca5",
+      "rounds": 1,
+      "link": true,
+      "type": "eq",
+      "forms": true,
+      "lastPage": 1
     }
 ]