errors in the summary row should be counting last_finished_status as reflected in the per connector rows (#3484)

Co-authored-by: Richard Kuo (Danswer) <rkuo@onyx.app>

web/src/app/admin/indexing/status/CCPairIndexingStatusTable.tsx

@@ -326,8 +326,9 @@ export function CCPairIndexingStatusTable({
           (sum, status) => sum + status.docs_indexed,
           0
         ),
-        errors: statuses.filter((status) => status.last_status === "failed")
-          .length,
+        errors: statuses.filter(
+          (status) => status.last_finished_status === "failed"
+        ).length,
       };
     });