fix: MarkdownRender table duplicate column elements

[ByteLan]

中文模板 / Chinese Template

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PR description

Fixes # MarkdownRender table duplicate column elements

• when header containing more than two components or bold texts

Changelog

🇨🇳 Chinese

• Fix: 修复了当MarkdownRender中的默认表格table，使用JSX组件的标题 或 标题使用加粗，数量≥2，会出现后面列覆盖前面列的情况。

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🇺🇸 English

• Fix: fix MarkdownRender table duplicate column elements when header containing more than two components or bold texts

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Additional information

issue：#2716

问题分析解决见飞书文档：https://byte-lan.feishu.cn/docx/B6YPdkeTSoboxHxCzRucYlLFn3f

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