Cartar Stroke teleporting the player

[exectails]

It's been reported that there's a glitch with the Highlander skill Cartar Stroke, where it makes the attacker teleport to 0,0,0 if that position is walkable. It's currently unknown why exactly this happens, but something appears to make the client send a move notification while the skill is used. And since we currently accept movement notifications as-is, you're effectively getting teleported.

It seems like the issue might be related to the move list found in the bytool data, and disabling that part in the client fixes this issue, but that's naturally not an option for us on the server. As such, we need to figure out what's going on there.