pacman fails to install linux-firmware-nvidia from core-testing
# Description:
I just went to update a system I haven't used in a bit (with testing repos enables), but got these errors:
```
# pacman -Syu
...
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad103 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad104 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad106 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad107 exists in filesystem
```
These files look to be owned by the previous `linux-firmware` package. As a workaround, I did:
```
# pacman -R linux-firmware
# pacman -Su linux-firmware
```
Not sure if this can be fixed in packaging, if it's an pacman bug, or even if it's my fault. Regardless, I thought I'd let you know in case it's not my fault - it should warrant a news post for when it comes out of testing if it requires manual intervention.
# Additional info:
Package versions:
* linux-firmware `20250508.788aadc8-2` -> `20250613.12fe085f-5` (aka before the split to after the split).
# Steps to reproduce:
`sudo pacman -Syu` between the mentioned linux-firmware versions.
issue