fix(handler): hide mullvad nodes from list

[s0up4200]

I suspect this is just a bug and not intended behaviour. This is a simple fix that hides all the Mullvad nodes from the All machines list.

Tested on macOS v15.0.1 using VSCode v1.94.2

Fixes #278

[gbraad]

they should probably be grouped or have a setting to hide them.

[s0up4200]

they should probably be grouped or have a setting to hide them.

Are they even of any use here though? 🤔

[itsmatteomanf]

It would be probably a nice next step to allow hiding of non-SSH machines, too... Mullvad Nodes should just be hidden anyway, no need and no permissions to access them anyway.

[gbraad]

Are they even of any use here though? 🤔

Not at the moment; besides copy-paste to the command line to set as exit-node. The extension does not allow this. so yeah, ...

If The same logic for non-ssh would be applied; this can be prevented for all the nodes, including mullvad.

which prevents this message. Although, this is kinda helpful as it shows the node is at least "ONLINE", as this is how I also use the extension. Note; plus the address/name might allow other services to be accessed from the command line or simple browser.