### Godot version

v4.0.beta14.official [28a24639c]

### System information

MacOS 12.6.2

### Issue description

Beta 14 throws an error for custom `@icon`, e.g.
```
class_name StateMachine extends Node

@icon("res://assets/icons/state_machine.svg")
```
> Annotation "`@icon`" is not allowed in this level.

In beta 13 and before that worked fine.

### Steps to reproduce

1. Add a custom `@icon` in a custom node script.
2. Error message: Annotation "`@icon`" is not allowed in this level.

There are possibly other errors because a `class_name` node is now not recognized if extended by other classes, but they should resolve if `@icon` is removed.

### Minimal reproduction project

N/A
if (p_call->is_super) {
		push_text("super");
		if (p_call->callee != nullptr) {
			push_text(".");
			print_expression(p_call->callee);
		}
	} else {
		print_expression(p_call->callee);
	}
	push_text("( ");
	for (int i = 0; i < p_call->arguments.size(); i++) {
		if (i > 0) {
			push_text(" , ");
		}
		print_expression(p_call->arguments[i]);
	}
	push_text(" )");
}
void GDScriptParser::TreePrinter::print_cast(CastNode *p_cast) {
	print_expression(p_cast->operand);
	push_text(" AS ");
	print_type(p_cast->cast_type);
}
void GDScriptParser::TreePrinter::print_class(ClassNode *p_class) {