Links in the Nav bar do not support rewrites

[ThePlenkov]

Describe the bug

I have a /guide path redirecting to one of first pages like guide/product and it works if I click action button, feature button or just change the route.

However it doesn't work if I click a nav button

Reproduction

import { defineConfig } from 'vitepress'

// https://vitepress.dev/reference/site-config
export default defineConfig({ 
  rewrites: {
    '/guide': "guide/intro"
  },
  themeConfig: {
    // https://vitepress.dev/reference/default-theme-config
    nav: [
      { text: 'Home', link: '/' },
      { text: 'Guide', link: '/guide' }
    ],

    sidebar: {

      "/guide": [
        {
          text: 'Introduction',
          items: [
            { text: 'Intro?', link: '/guide/intro/' },
          ]
        },
]

    }
  }

)

Expected behavior

I expect that clicking a link in the nav would handle it same way as it handles it everywhere else on the site

System Info

System:
    OS: Linux 5.15 Debian GNU/Linux 12 (bookworm) 12 (bookworm)
    CPU: (2) x64 12th Gen Intel(R) Core(TM) i7-1265U
    Memory: 7.76 GB / 11.69 GB
    Container: Yes
    Shell: 5.2.15 - /bin/bash
  Binaries:
    Node: 22.9.0 - /usr/local/bin/node
    Yarn: 1.22.22 - /usr/local/bin/yarn
    npm: 10.8.3 - /usr/local/bin/npm
    pnpm: 9.12.1 - /usr/local/share/npm-global/bin/pnpm
  npmPackages:
    vitepress: ^1.5.0 => 1.5.0

Additional context

No response

Validations

• Check if you're on the latest VitePress version.
• Follow our Code of Conduct
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.