### 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
function->parameters_indices[parameter->identifier->name] = 0;
				function->parameters.push_back(parameter);
			}
			complete_extents(parameter);
			consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected ")" after parameter name.)*");
			consume(GDScriptTokenizer::Token::COLON, R"*(Expected ":" after ")".)*");
			FunctionNode *previous_function = current_function;
			current_function = function;
			if (p_variable->setter_parameter != nullptr) {
				SuiteNode *body = alloc_node<SuiteNode>();
				body->add_local(parameter, function);
				function->body = parse_suite("setter declaration", body);
				p_variable->setter = function;
			}
			current_function = previous_function;
			complete_extents(function);
			break;
		}
		case VariableNode::PROP_SETGET:
			consume(GDScriptTokenizer::Token::EQUAL, R"(Expected "=" after "set")");
			make_completion_context(COMPLETION_PROPERTY_METHOD, p_variable);
			if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected setter function name after "=".)")) {
				p_variable->setter_pointer = parse_identifier();
			}
			break;
		case VariableNode::PROP_NONE:
			break; 
	}
}
void GDScriptParser::parse_property_getter(VariableNode *p_variable) {