Youtube Unthemed

### Is there an existing issue outlining your problem? - [x] I have searched the existing issues and they do not solve my problem. ### What userstyle are you seeing the problem on? lbl:youtube ### Describe your problem. Youtube is entirely unthemed by userstyle - likely just a continuation of the updates they made a few days ago. (every page I thought to test is affected) ### Attach screenshots. _No response_ ### Browser version(s) this issue occurs on LibreWolf 148.0.2-2 ### Stylus extension version Stylus 2.3.19 ### Installed version of the userstyle v2026.04.14 ### Any additional comments? _No response_