Podman volume appears in additional volume selection

[DavidePrincipi]

If a Podman volume is configured as explained in Local storage it also appears in additional volume selection in install/clone/restore workflows.

Steps to reproduce

• Configure on node 1 a Local storage backup destination on a custom device, as explained in https://docs.nethserver.org/projects/ns8/en/latest/backup.html#local-storage
• Restore an application (e.g. RustFS) that supports additional volumes on node 1

Expected behavior

No additional volumes are available for selection.

Actual behavior

I can choose the backup volume as RustFS data destination.

Components

Core 3.18.4