chore: import upstream snapshot with attribution

apps/docs/components/node-form/editor.tsx

@@ -0,0 +1,15 @@
+/**
+ * Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+ * SPDX-License-Identifier: MIT
+ */
+
+import React from 'react';
+
+// https://github.com/web-infra-dev/rspress/issues/553
+const Editor = React.lazy(() =>
+  import('@flowgram.ai/demo-node-form').then((module) => ({
+    default: module.Editor,
+  }))
+);
+
+export { Editor };