Active link not highlighted in mobile navigation menu

[yescallop]

Describe the bug

Active link is currently highlighted in widescreen navigation bar:

In mobile side bar:

But not in mobile navigation menu:

It can be more consistent if active link is also highlighted in mobile navigation menu.

Reproduction

Open https://vitepress.dev/guide/what-is-vitepress on mobile and open the navigation menu.

Expected behavior

The link Guide is highlighted.

System Info

System:
    OS: Linux 6.6 Arch Linux
    CPU: (8) x64 11th Gen Intel(R) Core(TM) i5-11300H @ 3.10GHz
    Memory: 5.11 GB / 7.65 GB
    Container: Yes
    Shell: 5.3.9 - /usr/bin/bash
  Binaries:
    Node: 25.2.1 - /usr/sbin/node
    npm: 11.6.4 - /usr/sbin/npm
  npmPackages:
    vitepress: =2.0.0-alpha.15 => 2.0.0-alpha.15

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.