### 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
switch (p_type) {
		case Variant::PACKED_BYTE_ARRAY:
		case Variant::PACKED_INT32_ARRAY:
		case Variant::PACKED_INT64_ARRAY:
			return Variant::INT;
		case Variant::PACKED_FLOAT32_ARRAY:
		case Variant::PACKED_FLOAT64_ARRAY:
			return Variant::FLOAT;
		case Variant::PACKED_STRING_ARRAY:
			return Variant::STRING;
		case Variant::PACKED_VECTOR2_ARRAY:
			return Variant::VECTOR2;
		case Variant::PACKED_VECTOR3_ARRAY:
			return Variant::VECTOR3;
		case Variant::PACKED_COLOR_ARRAY:
			return Variant::COLOR;
		default:
			return Variant::NIL;
	}
}
bool GDScriptParser::DataType::is_typed_container_type() const {