Browser forword&backword not trigger onAfterRouteChanged

[maicss]

Describe the bug

Browser forword&backword not trigger router.onAfterRouteChanged

Reproduction

https://github.com/maicss/website/blob/main/.vitepress/theme/GiscusLayout.vue#L161-L170

When click forword or backward of browser, keeping print 111 but not 222

Expected behavior

Should trigger router.onAfterRouteChanged

System Info

System:
    OS: Windows 10 10.0.19045
    CPU: (8) x64 Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
    Memory: 14.63 GB / 23.94 GB
  Binaries:
    Node: 20.9.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.21 - C:\Program Files\nodejs\yarn.CMD
    npm: 10.2.3 - C:\Program Files\nodejs\npm.CMD
    pnpm: 8.10.5 - C:\Program Files\nodejs\pnpm.CMD
  Browsers:
    Edge: Spartan (44.19041.3636.0), Chromium (119.0.2151.72)
  npmPackages:
    vitepress: 1.0.0-rc.28 => 1.0.0-rc.28

### Additional context

_No response_

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- [X] Read the [docs](https://vitepress.dev).
- [X] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.