fix(cnwebsite): remove markdown.format 'detect' to fix JSX rendering in .md files

[sunnylqm]

问题

markdown.format: 'detect' 导致所有 .md 文件按纯 Markdown 解析，JSX 组件（<Tabs>、<TabItem> 等）不会被处理。影响 getting-started 及其他 55+ 个使用 Tabs 的页面。

EN 上游没有此配置，默认全部按 MDX 解析。

改动

• 移除 cnwebsite/docusaurus.config.ts 中的 format: 'detect'，与 EN 上游保持一致
• 将 24 个版本文档中的 {#custom-id} 语法转换为 MDX v3 兼容的 {/*custom-id*/} 语法（backward-compatibility-*.md，版本 0.70-0.81）
• 版本文档中的 HTML comments 均在 code fence 内，MDX 解析安全

验证

yarn build 通过（67s）。

Summary by CodeRabbit

• Documentation

  • Updated internal reference anchors across multiple versions of backward-compatibility guides for Fabric Components and TurboModules.
  • Removed language-specific code examples from JavaScript standardization sections in select documentation versions.

• Chores

  • Adjusted Docusaurus markdown configuration settings for diagram format handling.

[netlify]

❌ Deploy Preview for reactnativecn failed. Why did it fail? →

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[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

This PR modernizes the React Native documentation configuration and guides by removing Mermaid format auto-detection settings, migrating heading anchor syntax to a new standardized format across versioned docs (0.70–0.81), and removing outdated code re-export examples from backward-compatibility guides.

Changes

Documentation Configuration and Format Updates

Layer / File(s)	Summary
Mermaid Configuration Simplification cnwebsite/docusaurus.config.ts	Removes the explicit format: 'detect' option from Docusaurus markdown Mermaid settings, leaving mermaid: true enabled without format auto-detection.
iOS Heading Anchor Format Migration cnwebsite/versioned_docs/version-{0.70..0.81}/the-new-architecture/backward-compatibility-{fabric-components,turbomodules}.md	iOS subsection heading anchors are systematically updated from the old {#dependencies-ios} syntax to the new {/_dependencies-ios_/} format across all versioned documentation files for both fabric-components and turbomodules guides, affecting internal navigation and linking.
JavaScript Re-export Pattern Cleanup cnwebsite/versioned_docs/version-{0.72..0.81}/the-new-architecture/backward-compatibility-fabric-components.md	Removes Flow/TypeScript language-specific Tabs code examples showing re-export patterns via require('./MyComponentNativeComponent').default from versioned fabric-components guides, simplifying documentation on native component registration to focus on codegenNativeComponent usage.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• reactnativecn/react-native-website#1021: Updates Mermaid/Docusaurus integration in cnwebsite/docusaurus.config.ts
• reactnativecn/react-native-website#1022: Directly modifies markdown.mermaid configuration settings in docusaurus config with opposite changes (format: 'detect' additions vs. removal)

Poem

🐰 Anchors set and formats bright,
iOS docs now link just right,
No re-exports clogging views,
Mermaid flows with cleaner hues!
Versions aligned from old to new,
Documentation's morning dew. ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change—removing markdown.format 'detect' to fix JSX rendering—which is the core fix in the primary configuration change. While the PR also includes documentation heading updates, the title focuses on the most impactful change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/remove-format-detect

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