nixos/geoclue2: wait for network to be up when wifi provider is enabled

nixos/modules/services/desktops/geoclue2.nix

@@ -216,6 +216,7 @@ in
         # we can't be part of a system service, and the agent should
         # be okay with the main service coming and going
         wantedBy = [ "default.target" ];
+        after = lib.optionals cfg.enableWifi [ "network-online.target" ];
         unitConfig.ConditionUser = "!@system";
         serviceConfig = {
           Type = "exec";