Describe The Bug
Preloader is very imperceptible on the IPTV page. For example, i click on the channel and i can't always see if it's loading.
And i am pretty sure this is not the only place where the preloader has this problem.

Steps To Reproduce

1. set IPTV list
2. play it

Expected Behavior

Preloader should be clearly visible and noticeable. It should has another color, for example.

Logs

Screenshots

Try to find the preloader here:

System (please complete the following information):

• Platform: Linux
• Browser: Brave
• Jellyfin Version: 10.8.10

Additional Context