Update flake lock revisions and package settings

- Pin newer revisions for firefox‑addons, home‑manager, nixpkgs,
  noctalia‑shell and stylix.
- Enable Evolution in programs.
- Use Plex desktop override with QT_QPA_PLATFORM and comment out
  the plain version.
- Comment out settings.settingsVersion in noctalia config.
- Reduce plugin window width to 1100 and add columnCount = 2.

modules/home/noctalia/plugins.nix

@@ -32,7 +32,8 @@
         hyprlandConfigPath = "~/.config/hypr/hyprland.conf";
         modKeyVariable = "SUPER";
         windowHeight = 850;
-        windowWidth = 1400;
+        windowWidth = 1100;
+        columnCount = 2;
         autoHeight = true;
       };
     };