TerminalPanel: StatJob::mostLocalUrl only works with ":local" protocols

StatJob::mostLocalUrl was changed to cancel the job automatically if the
protocol Class isn't ":local", mostLocalUrl only makes sense with ioslaves
that actually set UDS_LOCAL_PATH (which should have calss ":local").

I tested that kio-fuse still works, when having the terminal panel open and
changing direcotries in Dolphin, with an sftp:// server.