### Godot version

4.1.1

### System information

windows 11

### Issue description

When registering a type with class_name and using that class name to declare a variable in code only, autocomplete works as expected anywhere in other nodes/scenes. However, if making a custom scene node that extends a script with the class_name, if that custom scene is instantiated in a different scene, even if the type is specified, it only shows the parent node's functions and not any of the extended functionality. I have made a basic project showing the issue

### Steps to reproduce

I have made a very simple project showing the issue. https://github.com/mmmmmmmmmmmmmmmmmmmdonuts/godot_4_autocomplete_issue essentially, the extended Node scene will only show the custom function when both the type is specified as well as the type afterwards following "as" 
e.g. `@onready var my_class_4: MyClass = $MyClass4 as MyClass`

### Minimal reproduction project

https://github.com/mmmmmmmmmmmmmmmmmmmdonuts/godot_4_autocomplete_issue
}
					base_type = base_type.class_type->base_type;
					break;
				case GDScriptParser::DataType::NATIVE: {
					if (id_type.is_set() && !id_type.is_variant()) {
						base_type = GDScriptParser::DataType();
						break;
					}
					MethodInfo info;
					if (ClassDB::get_method_info(base_type.native_type, p_context.current_function->identifier->name, &info)) {
						for (const PropertyInfo &E : info.arguments) {
							if (E.name == p_identifier->name) {
								r_type = _type_from_property(E);
								return true;
							}
						}
					}
					base_type = GDScriptParser::DataType();
				} break;
				default:
					break;
			}
		}
	}
	if (id_type.is_set() && !id_type.is_variant()) {
		r_type.type = id_type;
		return true;
	}
	
	if (p_context.current_class) {