### 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 (found != nullptr) {
						err = resolve_class_inheritance(found, p_source);
					}
				}
				if (err || found == nullptr) {
					push_error(vformat(R"(Could not resolve script "%s".)", script_path), p_source);
					GDScriptParser::DataType error_type;
					error_type.kind = GDScriptParser::DataType::VARIANT;
					return error_type;
				}
				result.kind = GDScriptParser::DataType::CLASS;
				result.native_type = found->get_datatype().native_type;
				result.class_type = found;
				result.script_path = ref->get_parser()->script_path;
			} else {
				result.kind = GDScriptParser::DataType::SCRIPT;
				result.native_type = scr->get_instance_base_type();
				result.script_path = scr->get_path();
			}
			result.script_type = scr;
		} else {
			result.kind = GDScriptParser::DataType::NATIVE;
			if (result.native_type == GDScriptNativeClass::get_class_static()) {
				result.is_meta_type = true;
			}
		}
	}
	return result;
}
GDScriptParser::DataType GDScriptAnalyzer::type_from_metatype(const GDScriptParser::DataType &p_meta_type) {