dilyn-jellyfin cannot connect to content provider

```
tricky ~/Dev/stuff main* 4s 06:05:27
❯ snap install dilyn-jellyfin-ffmpeg
dilyn-jellyfin-ffmpeg 7.1.2-4-jammy da Dilyn Corner installed

tricky ~/Dev/stuff main* 5s 06:05:36
❯ snap install dilyn-jellyfin
errore: cannot perform the following tasks:
- Esegui l'hook connect-plug-graphics-core22 dello snap "dilyn-jellyfin" (run hook "connect-plug-graphics-core22":
-----
cannot update snap namespace: cannot create symlink in "/etc/OpenCL": existing file in the way
snap-update-ns failed with code 1
-----)
```

Reproduce the failure with the two snap install commands and inspect the connect-plug-graphics-core22 hook output. Investigate why snap-update-ns cannot create the /etc/OpenCL symlink because an existing file is present; done means dilyn-jellyfin installs and connects its graphics plug successfully.

Written by the indexing model from the issue text.