### 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
consume(GDScriptTokenizer::Token::BRACE_CLOSE, R"(Expected "}" to close the dictionary pattern.)");
			break;
		}
		default: {
			
			ExpressionNode *expression = parse_expression(false);
			if (expression == nullptr) {
				push_error(R"(Expected expression for match pattern.)");
				return nullptr;
			} else {
				if (expression->type == GDScriptParser::Node::LITERAL) {
					pattern->pattern_type = PatternNode::PT_LITERAL;
				} else {
					pattern->pattern_type = PatternNode::PT_EXPRESSION;
				}
				pattern->expression = expression;
			}
			break;
		}
	}
	complete_extents(pattern);
	return pattern;
}
bool GDScriptParser::PatternNode::has_bind(const StringName &p_name) {
	return binds.has(p_name);
}
GDScriptParser::IdentifierNode *GDScriptParser::PatternNode::get_bind(const StringName &p_name) {
	return binds[p_name];
}
GDScriptParser::WhileNode *GDScriptParser::parse_while() {