### Godot version

v4.0.beta17.official [c40020513]

### System information

Apple M1 Max - macOS Ventura 13.1 (22C65)

### Issue description

I am getting an error due to functions no longer returning the correct typed array, when the function concatenates arrays and returns it.

In other words, the following fails:

```
func add_arrays() -> Array[ClassA]:
	var array_1: Array[ClassA] = []
	var array_2: Array[ClassA] = []
	return array_1 + array_2
```

<img width="864" alt="Screenshot 2023-02-02 at 1 02 53 PM" src="https://user-images.githubusercontent.com/905216/216320503-475bf4a1-353e-455c-87d5-69d036db706c.png">

I'm assuming when concatenating, the typing changes to a generic `Array` now? Just a guess. 

### Steps to reproduce

N/A

### Minimal reproduction project

[Godot Crash Project.zip](https://github.com/godotengine/godot/files/10568780/Godot.Crash.Project.zip)

ERR_FAIL_COND_MSG(!parser->valid_annotations.has(p_annotation->name), vformat(R"(Annotation "%s" not found to validate.)", p_annotation->name));
	if (p_annotation->is_resolved) {
		return;
	}
	p_annotation->is_resolved = true;
	const MethodInfo &annotation_info = parser->valid_annotations[p_annotation->name].info;
	const List<PropertyInfo>::Element *E = annotation_info.arguments.front();
	for (int i = 0; i < p_annotation->arguments.size(); i++) {
		GDScriptParser::ExpressionNode *argument = p_annotation->arguments[i];
		const PropertyInfo &argument_info = E->get();
		if (E->next() != nullptr) {
			E = E->next();
		}
		reduce_expression(argument);