### 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
break;
		case AssignmentNode::OP_MODULO:
			push_text("%");
			break;
		case AssignmentNode::OP_POWER:
			push_text("**");
			break;
		case AssignmentNode::OP_BIT_SHIFT_LEFT:
			push_text("<<");
			break;
		case AssignmentNode::OP_BIT_SHIFT_RIGHT:
			push_text(">>");
			break;
		case AssignmentNode::OP_BIT_AND:
			push_text("&");
			break;
		case AssignmentNode::OP_BIT_OR:
			push_text("|");
			break;
		case AssignmentNode::OP_BIT_XOR:
			push_text("^");
			break;
		case AssignmentNode::OP_NONE:
			break;
	}
	push_text("= ");
	print_expression(p_assignment->assigned_value);
	push_line();
}
void GDScriptParser::TreePrinter::print_await(AwaitNode *p_await) {