Replace renamed fullscreen option (Hyprland 0.53)

Configs/.config/hypr/hyprland/general.conf

@@ -123,7 +123,7 @@ misc {
     force_default_wallpaper = 0
     disable_hyprland_logo = true
     animate_manual_resizes = false
-    new_window_takes_over_fullscreen = 2
+    on_focus_under_fullscreen = 2
     allow_session_lock_restore = true
     focus_on_activate = true
 }