### Godot version

4.1.0

### System information

Windows 10, i711800H, Forward+ Vulkan

### Issue description

When using @export_group("Name") in a BaseClass, then inheriting from that BaseClass in another class and there also using @export_group("Name"), with the same group name, then running the project and re-saving the inherited class the project crashes with 
```
ERROR: FATAL: Index p_index = 3 is out of bounds (size() = 3).
   at: get (./core/templates/cowdata.h:155)
```

sometimes the editor crashes too after a while.

### Steps to reproduce

1. open reproduction project
2. Run the project.
3. Open the "super"script
4. Press CTRL + S to save it.

### Minimal reproduction project

[MRP_.zip](https://github.com/godotengine/godot/files/12137412/MRP_.zip)

}
			if (script.is_null()) {
				_set_error(vformat(R"(Could not find class "%s" in "%s".)", p_datatype.class_type->fqcn, p_datatype.script_path), nullptr);
				return GDScriptDataType();
			} else {
				
				
				if (!is_local_class) {
					result.script_type_ref = script;
				}
				result.script_type = script.ptr();
				result.native_type = p_datatype.native_type;
			}
		} break;
		case GDScriptParser::DataType::ENUM:
			result.kind = GDScriptDataType::BUILTIN;
			result.builtin_type = p_datatype.builtin_type;
			break;
		case GDScriptParser::DataType::RESOLVING:
		case GDScriptParser::DataType::UNRESOLVED: {
			ERR_PRINT("Parser bug: converting unresolved type.");
			return GDScriptDataType();
		}
	}
	if (p_datatype.has_container_element_type()) {
		result.set_container_element_type(_gdtype_from_datatype(p_datatype.get_container_element_type(), p_owner));
	}
	return result;
}
static bool _is_exact_type(const PropertyInfo &p_par_type, const GDScriptDataType &p_arg_type) {