virtualbox: fix virtualbox guest additions (#16964)

Changed files
+1 -1
nixos
modules
virtualisation
+1 -1
nixos/modules/virtualisation/virtualbox-guest.nix
···
serviceConfig.ExecStart = "@${kernel.virtualboxGuestAdditions}/bin/VBoxService VBoxService --foreground";
};
-
services.xserver.videoDrivers = mkOverride 50 [ "virtualbox" ];
+
services.xserver.videoDrivers = mkOverride 50 [ "virtualbox" "modesetting" ];
services.xserver.config =
''