### Godot version

v4.1.beta

### System information

Windows 10

### Issue description

```
        virtual Ref<Script> get_script() const override {
                if (native_info->get_script_func) {
                        GDExtensionObjectPtr script = native_info->get_script_func(instance);
                        return Ref<Script>(reinterpret_cast<Script *>(script));
                }
                return Ref<Script>();
```
Is not creating a functional reference.

GDExtensionObjectPtr is a part of gdextension_interface and is a void pointer to pas data pointers between GDExtesion and Godot Core.

In the images below you are able to see that the extension `reinterpret_cast `works fine.
And that the pointer is passed to core.
However at core `Ref<Script> script_test` stays a NULL value

![image](https://github.com/godotengine/godot/assets/20573784/d4a955d3-4e02-46e2-abf1-ba88cf501e8f)
![image](https://github.com/godotengine/godot/assets/20573784/42a3fbb8-3598-479a-86bc-8b9464624885)
![image](https://github.com/godotengine/godot/assets/20573784/620782c0-192c-4e14-829c-5817ae680378)

I was hoping this would be solved by solving [cpp 1119](https://github.com/godotengine/godot-cpp/issues/1119)



### Steps to reproduce

Create a custom script instance and create it using `internal::gdextension_interface_script_instance_create` and a `GDExtensionScriptInstanceInfo` that only implements `get_property_list_func` and `get_script_func`.

### Minimal reproduction project

Difficult to create a minimal project.
Mostly looking for advice on what to test to find the actual source problem
TypedArray<Dictionary> ret;
		GDVIRTUAL_REQUIRED_CALL(_get_built_in_templates, p_object, ret);
		Vector<ScriptTemplate> stret;
		for (int i = 0; i < ret.size(); i++) {
			Dictionary d = ret[i];
			ScriptTemplate st;
			ERR_CONTINUE(!d.has("inherit"));
			st.inherit = d["inherit"];
			ERR_CONTINUE(!d.has("name"));
			st.name = d["name"];
			ERR_CONTINUE(!d.has("description"));
			st.description = d["description"];
			ERR_CONTINUE(!d.has("content"));
			st.content = d["content"];
			ERR_CONTINUE(!d.has("id"));
			st.id = d["id"];
			ERR_CONTINUE(!d.has("origin"));
			st.origin = TemplateLocation(int(d["origin"]));
			stret.push_back(st);
		}
		return stret;
	}
	EXBIND0R(bool, is_using_templates)
	GDVIRTUAL6RC(Dictionary, _validate, const String &, const String &, bool, bool, bool, bool)
	virtual bool validate(const String &p_script, const String &p_path = "", List<String> *r_functions = nullptr, List<ScriptError> *r_errors = nullptr, List<Warning> *r_warnings = nullptr, HashSet<int> *r_safe_lines = nullptr) const override {