upgrade the ia of the copper golem

My copper golems instead of using the doors (that are open) they go into the wall trying to pass the trapdoors (closed and a block higher) and if there'are some chest above others that the copper golem can't reach, they stay still watching them. I suggest to let the copper golem recalculate the route for the chests (even if the new one is longer) to ensure that these problems do not happen again.