Fix regression: Foreground redraw after G keybind

This fixes a regression from 2.4 where the foreground wouldn't update
after using the G keybind to go to a room, requiring the user to touch a
tile to update the rendering.

desktop_version/src/Editor.cpp

@@ -2105,6 +2105,7 @@ static void input_submitted(void)
 
         ed.levx = SDL_clamp(help.Int(coord_x) - 1, 0, cl.mapwidth - 1);
         ed.levy = SDL_clamp(help.Int(coord_y) - 1, 0, cl.mapheight - 1);
+        graphics.foregrounddrawn = false;
         graphics.backgrounddrawn = false;
         break;
     }