Incompatible with Waystones 21.1.35

[thelegodoctor-glitch]

Steps:

Install Confluence: Otherworld 1.2.4
Install Waystones 21.1.35

Game crashes on startup.

[BlayTheNinth]

@ Confluence Team, this could have been avoided if you'd have just talked to me before Mixin-patching my internals.

I'm fine with making changes for better compatibility, like adding events or new API methods (or even better dedicated mixin entrypoints to avoid brittle code surgeries).

Some of the things the mixins are doing should have already been possible through WaystoneTeleportEvent.Pre. For convenience, I'm also adding a WaystoneBlockEntity constructor with a type parameter in the next update.

Please in the future contact me before resorting to Mixins so we can find a satisfactory solution that doesn't result in these kind of problems.