Invisible Action Filter checkboxes

[gguishe]

Describe the bug
When exporting, if Action Filter is enabled a UIList with Actions is shown, to filter these actions the user must click invisible checkboxes.

To Reproduce
Steps to reproduce the behavior:

1. Add 2 actions to the default cube
2. Open the export window
3. Check Action Filter
4. See that there are no checkboxes (they are invisible)

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

.blend file/ .gltf (mandatory)
A zipped folder containing a .blend file for exporter issues and a .gltf file for importer issues. Please take care to include all resources, such as textures in the .zip file.
If you are not allowed to share your file, make sure to create a new one from scratch that shows the issue. You can also try to delete or modify some data (objects, change textures, replace some meshes by some placeholder), to be able to share it without restriction.

Version
OS - Windows-10-10.0.22631-SP0 64 Bits
Blender Version - 4.3.0 Alpha, branch: main, commit date: 2024-08-07 22:58, hash: 915be63b016f

Additional context
Add any other context about the problem here.

2024-08-08.09-09-13.mp4

[julienduroure]

Confirmed