feat(district): Tweak attachment page logic to get PACER case ID from…

… DSL

- Adds logic to the handleAttachmentMenuPage method to extract the pacer_case_id from the GoDLS function in cases where it's not directly available in the page's DOM.
- Improves the reliability of PACER case ID retrieval on attachment pages.

CHANGES.md

@@ -12,6 +12,7 @@ Changes:
 
 Fixes:
  - Corrected typo in build script, ensuring correct favicon path for Firefox releases([379](https://github.com/freelawproject/recap/issues/379), [397](https://github.com/freelawproject/recap-chrome/pull/397))
+ - Improves the reliability of PACER case ID retrieval on attachment pages ([369](https://github.com/freelawproject/recap/issues/369))
 
 For developers:
  - Nothing yet

src/content_delegate.js

@@ -367,6 +367,15 @@ ContentDelegate.prototype.handleAttachmentMenuPage = async function () {
     return;
   }
 
+  if (!this.pacer_case_id)
+    this.pacer_case_id = await getPacerCaseIdFromPacerDocId(
+      this.tabId,
+      this.pacer_doc_id
+    );
+
+  // If we don't have this.pacer_case_id at this point, punt.
+  if (!this.pacer_case_id) return;
+
   const upload = await dispatchBackgroundFetch({
     action: 'upload',
     data: {