官方综合场景的demo中，低代码组件示例在预览中无法正确展示。

## **Describe the bug (required)** / **详细描述 bug（必填）**

官方综合场景的demo中，低代码组件示例在预览中无法正确展示。

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## **To Reproduce (required)** / **如何复现 bug？（必填，非常重要）**

具体操作如图：

复现demo地址：https://lowcode-engine.cn/demo/demo-general/index.html

## **Expected behavior (required)** / **预期行为（必填，非常重要）**

LowcodeComponent 如何才能正确展示？

## **Screenshots (optional)** / **bug 截图（可选）**


## **Environments (please complete the following information) (required):** / **请提供如下信息（必填）**
官方综合场景的版本

Start by reproducing the problem in the official general-scenario demo at https://lowcode-engine.cn/demo/demo-general/index.html, following the steps shown in the issue screenshots. Trace the LowcodeComponent example used by the preview and identify why it is not rendered correctly; done means the example displays correctly in the preview.

Written by the indexing model from the issue text.