Fix jmap integration

[Thodor12]

Closes discord report Journeymap no longer seems to be working

Changes proposed in this pull request

• Removed a SubscribeEvent annotation, this caused Neoforge to assume the method was a Neoforge event handler, throwing an exception because the parameter wasn't an Event class. This was a silent exception caused during the Jmap plugin load, causing the plugin not to start.

Testing

• Yes I tested this before submitting it.
• I also did a multiplayer test.

Review please

[Raycoms]

But is this still properly called?

[Thodor12]

Yeah, I booted it up and made sure it works, and it does. In 1.20 it works too so that ain't the problem.

[uecasm]

It worked when we were using the shared event bus. It still seems weird that we've split that off; it's likely to confuse addon mod makers by not following conventions.