### Godot version

v4.0.beta.custom_build [1d14c054a]

### System information

Kubuntu 22.10

### Issue description

Regression in master (in beta 10 the following script works correctly).

### Steps to reproduce

```gdscript
@tool
extends EditorScript

func wait(time: float) -> void:
    await get_editor_interface().get_tree().create_timer(time).timeout

func _run() -> void:
    reference()
    # Error: Cannot get return value of call to "wait()" because it returns "void".
    await wait(1.0)
    print("Test")
    unreference()
```

### Minimal reproduction project

N/A
resolve_class_inheritance(base_class, p_source);
		base_class = base_class->base_type.class_type;
	}
	if (found_function != nullptr) {
		r_static = p_is_constructor || found_function->is_static;
		for (int i = 0; i < found_function->parameters.size(); i++) {
			r_par_types.push_back(found_function->parameters[i]->get_datatype());
			if (found_function->parameters[i]->initializer != nullptr) {
				r_default_arg_count++;
			}
		}
		r_return_type = p_is_constructor ? p_base_type : found_function->get_datatype();
		r_return_type.is_meta_type = false;
		r_return_type.is_coroutine = found_function->is_coroutine;
		return true;
	}
	Ref<Script> base_script = p_base_type.script_type;
	while (base_script.is_valid() && base_script->has_method(function_name)) {
		MethodInfo info = base_script->get_method_info(function_name);
		if (!(info == MethodInfo())) {
			return function_signature_from_info(info, r_return_type, r_par_types, r_default_arg_count, r_static, r_vararg);
		}
		base_script = base_script->get_base_script();
	}
	
	if (p_base_type.is_meta_type && !p_is_constructor && (p_base_type.kind == GDScriptParser::DataType::SCRIPT || p_base_type.kind == GDScriptParser::DataType::CLASS)) {
		MethodInfo info;
		StringName script_class = p_base_type.kind == GDScriptParser::DataType::SCRIPT ? p_base_type.script_type->get_class_name() : StringName(GDScript::get_class_static());
		if (ClassDB::get_method_info(script_class, function_name, &info)) {
			return function_signature_from_info(info, r_return_type, r_par_types, r_default_arg_count, r_static, r_vararg);