Fix minecart/boat stopping on collide with vanished player

[MrNavaStar]

Minecarts and boats stop moving if they collide with a vanished player. This mixin fixes that (for both, even tho its only in the boat class... Mojang why...)

• Note: If the player in the boat can see vanished players, they will still collide on the client (but not on the server). Not really sure if there is a way to fix that, but I don't think its a big concern since you can see the thing your running into. This doesn't seem to effect minecarts at all.

[MrNavaStar]

Just realized this should probably be tied to one of the interaction configs, will update tomorrow.