Restore the legacy Fyne UI's two disabled "GUI: x.y.z" / "Daemon: a.b.c"
entries under About so users (and support) can read the running
versions from the tray. The GUI line is baked in at build time via
version.NetbirdVersion() — the same -ldflags chain the rest of the
repo uses. The daemon line starts as "—" and is rewritten in
applyStatus on every Status snapshot whose DaemonVersion differs from
the last one we recorded, so a daemon restart with a new build
(e.g. after an enforced update) updates the menu automatically.
Drive-by: rename the local variable that shadowed the version package
in handleUpdate so the import resolves cleanly.