Line numbers don't work correctly with code group.

[Rollczi]

Describe the bug

Line numbers don't work correctly with code group.

Reproduction

Enable line numbers:

Add code group:

Expected behavior

System Info

System:                                                 
    OS: Windows 10 10.0.19045                             
    CPU: (6) x64 Intel(R) Core(TM) i5-9600KF CPU @ 3.70GHz
    Memory: 1.83 GB / 15.94 GB                            
  Binaries:
    Node: 18.7.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.19 - ~\AppData\Roaming\npm\yarn.CMD
    npm: 8.15.0 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.19041.1266.0), Chromium (107.0.1418.35)
  npmPackages:
    vitepress: 1.0.0-alpha.28 => 1.0.0-alpha.28

Additional context

No response

Validations

• 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.

[brc-dd]

The issue is with whatever plugin you're using, not VitePress.