Fix a wrong validation check in camera_set_limits (#418)

Events interruption should now work at all time (added interruption in room_selector scene)
Fixed missing test in game.gd for when the player is not set
Fixed some ESC scripts (worker filled sheet event is now blocking, room13 left door waits simple click, not use verb)

game/rooms/room13/esc/left_exit.esc

@@ -1,4 +1,4 @@
-:use
+:exit_scene
 set_sound_state _sound res://game/sfx/sounds/doorOpen_2.ogg false
 change_scene "res://game/rooms/room12/room12.tscn"