docs(theme): Clarify LastUpdated configuration and customization guidance

[Copilot]

Rspress only supports lastUpdated: true; formatting customization requires ejecting the LastUpdated component.

• Docs (ZH/EN): update LastUpdated usage to show boolean themeConfig.lastUpdated: true.
• Customization note: direct users to rspress eject and edit theme/components/LastUpdated/index.tsx for custom labels/formatting.

Example:

// rspress.config.ts
export default defineConfig({
  themeConfig: {
    lastUpdated: true,
  },
});

// For custom formatting: run `rspress eject LastUpdated` and edit
// theme/components/LastUpdated/index.tsx.

Original prompt

LastUpdated 的文档存在错误

Rspress 似乎仅提供了 lastUpdated: true 配置，如果有格式需求，需要使用 rspress eject 功能对 LastUpdated 组件进行修改

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[Copilot]

Pull request overview

This PR corrects the documentation for the LastUpdated component configuration in Rspress. The original documentation incorrectly showed that lastUpdated could be configured as an object with options like text, format, and timezone, when in reality Rspress only supports a boolean value (lastUpdated: true). The PR also adds guidance on how to customize the component through the eject feature.

• Simplified lastUpdated configuration from object format to boolean true
• Added customization instructions directing users to eject and modify the component

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
website/docs/zh/ui/components/last-updated.mdx	Updated Chinese documentation to show correct boolean configuration and added eject customization instructions
website/docs/en/ui/components/last-updated.mdx	Updated English documentation to show correct boolean configuration and added eject customization instructions

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[github-actions]

Rsdoctor Bundle Diff Analysis

📊 Quick Summary (Click to expand)

Project	Total Size	Change
web	14.9 MB	➡️ -2.5 KB (-0.0%)

📁 web

Path: website/doc_build/web/rsdoctor-data.json

📌 Baseline Commit: e86fde2df5 | PR: #2319

Metric	Current	Baseline	Change
📊 Total Size	14.9 MB	14.9 MB	-2.5 KB (-0.0%)
📄 JavaScript	14.3 MB	14.3 MB	-2.4 KB (-0.0%)
🎨 CSS	114.2 KB	114.2 KB	0 B (0.0%)
🌐 HTML	0 B	0 B	N/A
📁 Other Assets	512.4 KB	512.5 KB	-84.0 B (-0.0%)

📦 Download Diff Report: web Bundle Diff

Generated by Rsdoctor GitHub Action