### 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)

if (err) {
				push_error(vformat(R"(Could not resolve script "%s": %s.)", script_path, error_names[err]), p_source);
				return;
			}
			ERR_FAIL_COND_MSG(!parser_ref->get_parser()->has_class(p_class), R"(Parser bug: Mismatched external parser.)");
			GDScriptAnalyzer *other_analyzer = parser_ref->get_analyzer();
			GDScriptParser *other_parser = parser_ref->get_parser();
			int error_count = other_parser->errors.size();
			other_analyzer->resolve_class_interface(p_class);
			if (other_parser->errors.size() > error_count) {
				push_error(vformat(R"(Could not resolve class "%s".)", p_class->fqcn), p_source);
			}
			return;
		}
		p_class->resolved_interface = true;
		if (resolve_class_inheritance(p_class) != OK) {
			return;
		}
		GDScriptParser::DataType base_type = p_class->base_type;
		if (base_type.kind == GDScriptParser::DataType::CLASS) {
			GDScriptParser::ClassNode *base_class = base_type.class_type;
			resolve_class_interface(base_class, p_class);
		}
		for (int i = 0; i < p_class->members.size(); i++) {
			resolve_class_member(p_class, i);
#ifdef DEBUG_ENABLED
			if (!has_static_data) {
				GDScriptParser::ClassNode::Member member = p_class->members[i];
				if (member.type == GDScriptParser::ClassNode::Member::CLASS) {
					has_static_data = member.m_class->has_static_data;