### 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)

push_error(R"*(Cannot use shorthand "get_node()" notation ("$") on a class that isn't a node.)*", p_get_node);
	}
	mark_lambda_use_self();
	p_get_node->set_datatype(result);
}
GDScriptParser::DataType GDScriptAnalyzer::make_global_class_meta_type(const StringName &p_class_name, const GDScriptParser::Node *p_source) {
	GDScriptParser::DataType type;
	String path = ScriptServer::get_global_class_path(p_class_name);
	String ext = path.get_extension();
	if (ext == GDScriptLanguage::get_singleton()->get_extension()) {
		Ref<GDScriptParserRef> ref = get_parser_for(path);
		if (ref.is_null()) {
			push_error(vformat(R"(Could not find script for class "%s".)", p_class_name), p_source);
			type.type_source = GDScriptParser::DataType::UNDETECTED;
			type.kind = GDScriptParser::DataType::VARIANT;
			return type;
		}
		Error err = ref->raise_status(GDScriptParserRef::INHERITANCE_SOLVED);
		if (err) {
			push_error(vformat(R"(Could not resolve class "%s", because of a parser error.)", p_class_name), p_source);
			type.type_source = GDScriptParser::DataType::UNDETECTED;
			type.kind = GDScriptParser::DataType::VARIANT;
			return type;
		}
		return ref->get_parser()->head->get_datatype();
	} else {
		return make_script_meta_type(ResourceLoader::load(path, "Script"));
	}
}
void GDScriptAnalyzer::reduce_identifier_from_base_set_class(GDScriptParser::IdentifierNode *p_identifier, GDScriptParser::DataType p_identifier_datatype) {