### 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)

GDScriptParser::DataType type;
	type.type_source = GDScriptParser::DataType::ANNOTATED_EXPLICIT;
	type.kind = GDScriptParser::DataType::BUILTIN;
	type.builtin_type = Variant::CALLABLE;
	type.is_constant = true;
	type.method_info = p_info;
	return type;
}
static GDScriptParser::DataType make_signal_type(const MethodInfo &p_info) {
	GDScriptParser::DataType type;
	type.type_source = GDScriptParser::DataType::ANNOTATED_EXPLICIT;
	type.kind = GDScriptParser::DataType::BUILTIN;
	type.builtin_type = Variant::SIGNAL;
	type.is_constant = true;
	type.method_info = p_info;
	return type;
}
static GDScriptParser::DataType make_native_meta_type(const StringName &p_class_name) {
	GDScriptParser::DataType type;
	type.type_source = GDScriptParser::DataType::ANNOTATED_EXPLICIT;
	type.kind = GDScriptParser::DataType::NATIVE;
	type.builtin_type = Variant::OBJECT;
	type.native_type = p_class_name;
	type.is_constant = true;
	type.is_meta_type = true;
	return type;
}
static GDScriptParser::DataType make_script_meta_type(const Ref<Script> &p_script) {