linux: Better handle activation of opened URLs and directories

[apricotbucket28]

Fixes browser windows not being activated on KDE/Wayland after some recent system update

Release Notes:

• N/A

[mikayla-maki]

I don't have a good intuition for the availability of desktop portals. Could we switch Zed to only use the desktop portal implementation? Or is open useful as a fallback?

[apricotbucket28]

I don't have a good intuition for the availability of desktop portals. Could we switch Zed to only use the desktop portal implementation? Or is open useful as a fallback?

I left it because it's a simple fallback and to prevent cases like "Zed cannot open urls". However, we already heavily rely on portals elsewhere so maybe we could just drop open entirely (in that case I'll also need to switch the reveal_path function to use ashpd, which should be trivial).

[mikayla-maki]

I think I'd prefer that solution for overall code simplicity. If we have to patch around missing portals, I'd rather we had some data on whether it's working for people.

Thank you for this change!