ScriptCallbackEvent is actually a bevy message

[Ownezx]

Bevy has clarified the difference between a message and an event therefore making the name ScriptCallbackEvent missmatch its derive.

bevy_mod_scripting/crates/bevy_mod_scripting_core/src/event.rs

Lines 199 to 201 in a0a5991

	#[derive(Clone, Message, Debug)]
	#[non_exhaustive]
	pub struct ScriptCallbackEvent {