[Joystick Configuration] Joystick image takes too long to load

Or maybe there is an animation going on? I can't tell:

https://github.com/bluerobotics/cockpit/assets/5920286/cfe760b9-4c25-4ae1-87e1-348ddcf968b3

Reproduce the issue in the Joystick Configuration screen using the linked recording, and inspect how the joystick image is loaded or animated. The issue names no source file or test, so first locate that screen and its image entry point. Done means the image displays promptly and any intended animation is clear to the user.

Written by the indexing model from the issue text.