StringDispatch

This attempts to restore back MC-129055, allowing string dupers via tripwire hooks to work again.

Mainly made this out of frustration since I found out the modloader used for the pack I play on decided to patch this out themselves, so I'm just bringing this back in.

!21.1 known string duper in action, with oak log setup, lever switched to disable trapdoors, and water flowing, causing the string to constantly attach, and reattach, duping the string.