Vulkan/DXVK games in Flatpak on Nvidia GPU won't launch

Hello everyone, I'm reaching out here because I have no idea where else to ask for help. I'm experiencing an issue with running games that use Vulkan (DXVK) in Flatpak—they simply won't launch. This affects applications like Steam, Bottles, and Heroic in Flatpak. Initially, I encountered this problem on Fedora 40 and couldn't find a solution. I decided to try CachyOS, but within just a couple of hours, the same issue appeared there as well.

I have a laptop with hybrid graphics, and the problem doesn’t occur when using an external monitor or when switching to an X11 session instead of Wayland. Games that use OpenGL also run without any issues.

Below, I've included links to my bug reports. Any help would be greatly appreciated!

https://github.com/flatpak/flatpak/issues/5802
https://github.com/NVIDIA/open-gpu-kernel-modules/issues/698

Here are screenshots of the errors that appear after launching the games:


```
Operating System: CachyOS Linux
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.1
Kernel Version: 6.12.9-3-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 12 × 11th Gen Intel® Core™ i5-11400H @ 2.70GHz
Memory: 15.3 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics
Manufacturer: HP
Product Name: Victus by HP Laptop
```