### 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 (base_class->fqcn == p_class->fqcn) {
			push_error("Cyclic inheritance.", p_class);
			return ERR_PARSE_ERROR;
		}
		base_class = base_class->base_type.class_type;
	}
	p_class->base_type = result;
	class_type.native_type = result.native_type;
	p_class->set_datatype(class_type);
	parser->current_class = previous_class;
	return OK;
}
Error GDScriptAnalyzer::resolve_class_inheritance(GDScriptParser::ClassNode *p_class, bool p_recursive) {
	Error err = resolve_class_inheritance(p_class);
	if (err) {
		return err;
	}
	if (p_recursive) {
		for (int i = 0; i < p_class->members.size(); i++) {
			if (p_class->members[i].type == GDScriptParser::ClassNode::Member::CLASS) {
				err = resolve_class_inheritance(p_class->members[i].m_class, true);
				if (err) {
					return err;
				}
			}
		}
	}
	return OK;
}
GDScriptParser::DataType GDScriptAnalyzer::resolve_datatype(GDScriptParser::TypeNode *p_type) {