feat: set notifcation density to compact

modules/capabilities/noctalia/_noctalia-config.nix

@@ -458,7 +458,7 @@
   notifications = {
     enabled = true;
     enableMarkdown = false;
-    density = "default";
+    density = "compact";
     monitors = [ ];
     location = "bottom_right";
     overlayLayer = true;