refactor: move xdg.enable to hm-system-defaults

modules/hm-system-defaults.nix

@@ -12,6 +12,9 @@
         xdg.configFile."nix/registry.json".text =
           config.environment.etc."nix/registry.json".text;
       }
+      {
+        xdg.enable = true;
+      }
     ];
   };
 }

users/profiles/xdg.nix

@@ -1,9 +1,6 @@
 {
-  xdg = {
+  xdg.userDirs = {
     enable = true;
-    userDirs = {
+    createDirectories = true;
-      enable = true;
-      createDirectories = true;
-    };
   };
 }