nixos/systemd-oomd: disable systemd-oomd when enableUnifiedCgroupHierarchy is false

fixup for https://github.com/NixOS/nixpkgs/pull/203596

Changed files
+1 -1
nixos
modules
system
+1 -1
nixos/modules/system/boot/systemd.nix
···
# Avoid potentially degraded system state due to
# "Userspace Out-Of-Memory (OOM) Killer was skipped because of a failed condition check (ConditionControlGroupController=v2)."
-
systemd.services.systemd-oomd.enable = mkIf (!cfg.enableUnifiedCgroupHierarchy) false;
+
systemd.oomd.enable = mkIf (!cfg.enableUnifiedCgroupHierarchy) false;
services.logrotate.settings = {
"/var/log/btmp" = mapAttrs (_: mkDefault) {