fix(dashboard): mend app dashboard was not showing links for closed-ignored PRs

lib/workers/repository/cache.ts

@@ -92,6 +92,9 @@ async function generateBranchCache(
           baseBranch,
           baseBranchSha,
         ) ?? undefined;
+    } else if (baseBranchSha && !branchSha && branch.prNo) {
+      // if branch was deleted/ PR exists and ignored
+      prNo = branch.prNo;
     }
 
     const automerge = !!branch.automerge;