feat: disable jankyborders and yabai

* broken on macos 26 * https://github.com/koekeishiya/yabai/issues/2634
* https://github.com/FelixKratz/JankyBorders/issues/160

modules/darwin/desktop/janky-borders.nix

···
 {
   services.jankyborders = {
-    enable = true;
+    enable = false;
 
     width = 6.0;
     hidpi = true;

modules/darwin/desktop/yabai.nix

···
 {
   services.yabai = {
-    enable = true;
+    enable = false;
     enableScriptingAddition = true;
 
     config = {