nixos/authelia: start after `network-online.target` (#353542)

        {

          description = "Authelia authentication and authorization server";

          wantedBy = [ "multi-user.target" ];

          after = [ "network.target" ];

          after = [ "network-online.target" ]; # Checks SMTP notifier creds during startup

          wants = [ "network-online.target" ];

          environment =

            (lib.filterAttrs (_: v: v != null) {

              X_AUTHELIA_CONFIG_FILTERS = lib.mkIf (oidcJwksConfigFile != [ ]) "template";