### 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 (pending_indent) {
		printed += indent;
		pending_indent = false;
	}
	printed += p_text;
}
void GDScriptParser::TreePrinter::print_annotation(const AnnotationNode *p_annotation) {
	push_text(p_annotation->name);
	push_text(" (");
	for (int i = 0; i < p_annotation->arguments.size(); i++) {
		if (i > 0) {
			push_text(" , ");
		}
		print_expression(p_annotation->arguments[i]);
	}
	push_line(")");
}
void GDScriptParser::TreePrinter::print_array(ArrayNode *p_array) {
	push_text("[ ");
	for (int i = 0; i < p_array->elements.size(); i++) {
		if (i > 0) {
			push_text(" , ");
		}
		print_expression(p_array->elements[i]);
	}
	push_text(" ]");
}
void GDScriptParser::TreePrinter::print_assert(AssertNode *p_assert) {