test: update the test cases

examples/vite-app/cypress/support/RefReactFlow.tsx

@@ -0,0 +1,12 @@
+import { useEffect, useRef } from 'react';
+import ReactFlow from 'reactflow';
+
+export function RefReactFlow({ onGetRef }: { onGetRef: (element: HTMLDivElement | null) => void }) {
+  const ref = useRef<HTMLDivElement | null>(null);
+
+  useEffect(() => {
+    onGetRef(ref.current);
+  }, []);
+
+  return <ReactFlow ref={ref} />;
+}