worldmap: Disallow pausing if level starting

Otherwise, you could press escape while the level transition was happening,
which resorted in all sorts of silly behavior.

Signed-off-by: Swagtoy <me@ow.swag.toys>

Author: swagtoy

src/worldmap/worldmap.cpp

@@ -216,7 +216,8 @@ WorldMap::process_input(const Controller& controller)
     }
   }
 
-  if (controller.pressed_any(Control::START, Control::ESCAPE))
+  if (controller.pressed_any(Control::START, Control::ESCAPE) &&
+      !(m_in_world_select || m_in_level))
   {
     on_menu_button_press(MenuStorage::WORLDMAP_MENU);
   }