### Godot version

4.2 f5696c3

### System information

Windows 10 x64

### Issue description

![image](https://github.com/godotengine/godot/assets/2223172/7ad0e3b6-9599-4f7b-a07c-da54779e647a)


### Steps to reproduce

1. Add node
2. Attach a built-in script
3. Add child node
4. Add script to the child node
5. In some method write `get_parent().bui`

### Minimal reproduction project

N/A
#ifdef TOOLS_ENABLED
	bool th = EditorSettings::get_singleton()->get_setting("text_editor/completion/add_type_hints");
#else
	bool th = false;
#endif
	String s = "func " + p_name + "(";
	if (p_args.size()) {
		for (int i = 0; i < p_args.size(); i++) {
			if (i > 0) {
				s += ", ";
			}
			s += p_args[i].get_slice(":", 0);
			if (th) {
				String type = p_args[i].get_slice(":", 1);
				if (!type.is_empty()) {
					s += ": " + type;
				}
			}
		}
	}
	s += String(")") + (th ? " -> void" : "") + ":\n" + _get_indentation() + "pass # Replace with function body.\n";
	return s;
}
#ifdef TOOLS_ENABLED
#define COMPLETION_RECURSION_LIMIT 200
struct GDScriptCompletionIdentifier {