fix: harmonia backward compat

Author: oddlama

nixos/extractors/services.nix

@@ -244,7 +244,12 @@ in
         };
 
       harmonia =
-        mkIf (config.services.harmonia.cache.enable || (config.services.harmonia-dev.cache.enable or false))
+        mkIf
+          (
+            (config.services.harmonia.enable or false)
+            || (config.services.harmonia.cache.enable or false)
+            || (config.services.harmonia-dev.cache.enable or false)
+          )
           {
             name = "Harmonia";
             icon = "services.not-available";