xmarkdwon链接解析问题

### 重现步骤

在线示例链接：（必填）
链接回显有问题
步骤：
1. # Hello XMarkdown

> Streaming-friendly, extensible Markdown renderer for LLM output.

## Features

- **Streaming** – syntax recovery and progressive rendering
- **Extensible** – map any node to your React components (\`components\`)
- **Plugins** – Latex, code highlighting, Mermaid, etc.

**百度**（http://www.baidu.c），接着后面的内容

### 当前行为

### 预期行为

### 上下文

_No response_

### 版本

2.9.0

### 您在哪些浏览器上遇到了这个问题？

Chrome

Start by reproducing the link rendering example from the issue in Chrome and compare the current and expected screenshots. Trace the XMarkdown link parsing and rendering entry point for the malformed Baidu URL; done means the surrounding Chinese text and link render as shown in the expected result.

Written by the indexing model from the issue text.