moonarch-git: skip wlsunset in global enable loop

The blanket WantedBy-symlink loop installed a global-scope link for
wlsunset, which meant `systemctl --user disable` (the waybar nightlight
toggle's mechanism) could never persist — systemd warned about exactly
this scope mismatch on every disable. Filter survived reboots even when
the user turned it off.

PKGBUILD now skips wlsunset; moonarch.install drops the legacy symlink
on upgrade. pkgrel bumped so installed systems pick up the fix.

moonarch-git/moonarch.install

@@ -95,6 +95,11 @@ pre_upgrade() {
         done < /etc/passwd
         rm -f /etc/systemd/user/graphical-session.target.wants/cliphist.service 2>/dev/null || true
     fi
+
+    # Drop legacy global-scope wlsunset enablement. Nightlight is a toggle —
+    # the global symlink overrode user-scope disable, so the filter survived
+    # reboots even after the user turned it off.
+    rm -f /etc/systemd/user/graphical-session.target.wants/wlsunset.service 2>/dev/null || true
 }
 
 post_upgrade() {