i18n(zh-cn): Add /experimental-flags/fonts.mdx & Update /guides/fonts.mdx

[Nin3lee]

Description (required)

• Add /experimental-flags/fonts.mdx
• Update /guides/fonts.mdx

Related issues & labels (optional)

• 5.7.0 Minor release docs #11444
• feat(fonts): update optimized fallbacks note #11470
• Fix: Adds inline to Fonts Tailwind v4 instructions #11491
• feat(fonts): add note about google options #11484
• feat(fonts): warn if local font is in public dir #11511
• feat(fonts): local inference #11619
• fix: update fonts.mdx #11632
• Suggested label: i18n

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Tracked Files

File	Note
zh-cn/guides/fonts.mdx	Localization changed, will be marked as complete.
zh-cn/reference/experimental-flags/fonts.mdx	Localization added, will be marked as complete.

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[yanthomasdev]

LGTM! Good job! 🙌