prevent out of index error in getDagRunLabel function (apache#43388)

(cherry picked from commit fbc1c2b)

airflow/www/static/js/utils/index.ts

@@ -170,7 +170,7 @@ interface RunLabelProps {
 const getDagRunLabel = ({
   dagRun,
   ordering = ["executionDate"],
-}: RunLabelProps) => dagRun[ordering[0]] ?? dagRun[ordering[1]];
+}: RunLabelProps) => dagRun[ordering[0]];
 
 const getStatusBackgroundColor = (color: string, hasNote: boolean) =>
   hasNote