nixos/github-runner: fix nodeRuntimes option (#435476)

            };

            package = lib.mkPackageOption pkgs "github-runner" { } // {

              apply =

                # Support old github-runner versions which don't have the `nodeRuntimes` arg yet.

                pkg: pkg.override (old: lib.optionalAttrs (old ? nodeRuntimes) { inherit (config) nodeRuntimes; });

              apply = pkg: pkg.override { inherit (config) nodeRuntimes; };

            };

            ephemeral = lib.mkOption {