"Are you sure you want to quit?" screen background can no longer be retextured

The bug

From 24w09a to 24w13a, it was possible to change the texture used for the background of the "Are you sure you want to quit?" screen, like many other game menu screens. This no longer seems possible as of 24w14a.

How to reproduce

1. Apply the attached resource pack
2. Die
3. Use the quit button
4. Observe

Expected results

A pink wool background, as was the case in the previous snapshot.

Actual results

It remains translucent red.

How to fix

The easiest solution to this regression would be to allow the death screen background to be retextured as well, just like the normal menu screen background. This would contradict MC-269079's resolution, but would make things much better for resource pack creators.