[BUG?] Certain themes do not change style despite different stylesheet being set as default.

[HendrikMalherbe]

Describe the bug

As i said in the title, the default stylesheet does not apply to a few themes, specifically the categories and frameset themes (potentially other ones, i did not test all). Maybe this is the default behaviour...(?)

Steps to Reproduce

1. Go to mod.php, install a theme like categories or frameset.
2. Change default stylesheet to any other one.
3. Go to main page of the site, refresh.
4. Sh*t brix.

Expected Behavior

Style should be the one i set as default.

Server Specifications

- Ubuntu
- PHP 8.2

Additional Context

[perdedora]

yeah, it missing the classes which applies the theme. will try to push a fix this week