fcron: install systab

fixes #25072

Changed files
+1 -1
nixos
modules
services
scheduling
+1 -1
nixos/modules/services/scheduling/fcron.nix
···
--group fcron \
--directory /var/spool/fcron
# load system crontab file
-
#${pkgs.fcron}/bin/fcrontab -u systab ${pkgs.writeText "systab" cfg.systab}
+
/run/wrappers/bin/fcrontab -u systab ${pkgs.writeText "systab" cfg.systab}
'';
serviceConfig = {