### 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)

Variant result = Variant();
	if (p_variable->initializer) {
		bool is_initializer_value_reduced = false;
		Variant initializer_value = make_expression_reduced_value(p_variable->initializer, is_initializer_value_reduced);
		if (is_initializer_value_reduced) {
			result = initializer_value;
		}
	} else {
		GDScriptParser::DataType datatype = p_variable->get_datatype();
		if (datatype.is_hard_type()) {
			if (datatype.kind == GDScriptParser::DataType::BUILTIN && datatype.builtin_type != Variant::OBJECT) {
				if (datatype.builtin_type == Variant::ARRAY && datatype.has_container_element_type()) {
					result = make_array_from_element_datatype(datatype.get_container_element_type());
				} else {
					VariantInternal::initialize(&result, datatype.builtin_type);
				}
			} else if (datatype.kind == GDScriptParser::DataType::ENUM) {
				result = 0;
			}
		}
	}
	return result;
}
GDScriptParser::DataType GDScriptAnalyzer::type_from_variant(const Variant &p_value, const GDScriptParser::Node *p_source) {