### 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)

GDScriptParser::DataType true_type;
	if (p_ternary_op->true_expr) {
		true_type = p_ternary_op->true_expr->get_datatype();
	} else {
		true_type.kind = GDScriptParser::DataType::VARIANT;
	}
	GDScriptParser::DataType false_type;
	if (p_ternary_op->false_expr) {
		false_type = p_ternary_op->false_expr->get_datatype();
	} else {
		false_type.kind = GDScriptParser::DataType::VARIANT;
	}
	if (true_type.is_variant() || false_type.is_variant()) {
		result.kind = GDScriptParser::DataType::VARIANT;
	} else {
		result = true_type;
		if (!is_type_compatible(true_type, false_type)) {
			result = false_type;
			if (!is_type_compatible(false_type, true_type)) {
				result.kind = GDScriptParser::DataType::VARIANT;
#ifdef DEBUG_ENABLED
				parser->push_warning(p_ternary_op, GDScriptWarning::INCOMPATIBLE_TERNARY);
#endif
			}
		}
	}
	result.type_source = true_type.is_hard_type() && false_type.is_hard_type() ? GDScriptParser::DataType::ANNOTATED_INFERRED : GDScriptParser::DataType::INFERRED;
	p_ternary_op->set_datatype(result);
}
void GDScriptAnalyzer::reduce_type_test(GDScriptParser::TypeTestNode *p_type_test) {