Give "Wretched Shop" conditional windows.

Most other maps with obscenely abusive main buildings have conditional windows, ie. if window A is open, window B will be shut and vice versa.

Wretched Shop somehow avoided that patch, and is still one of the most utterly abusive buildings in the game, with 2 windows open every single time, and at least 2 safe pallets around the outside loop.

Please, fix this building, it's brainlessly easy to loop and grants far too much time for not even requiring thought.