### Godot version

Godot 4.0 RC 2

### System information

Windows 11

### Issue description

As the title states you get no autocompletion when statically typing.
Of course the code still works, but it shouldn't be neccessary to cast an object to a type it already is.

### Steps to reproduce

1. Create child class with some functionality
![image](https://user-images.githubusercontent.com/100119945/220173809-0b2b2788-d986-4fa7-815c-444268d09c32.png)

2. Get node in parent class and call childs function
![image](https://user-images.githubusercontent.com/100119945/220174167-5ff3c8e9-863e-4fbd-a3cf-d88d34597b39.png)



### Minimal reproduction project

N/A
ScriptLanguage::CodeCompletionOption hint1("attenuation", ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
			hint1.insert_text = hint1.display.quote(p_quote_style);
			r_result.insert(hint1.display, hint1);
			ScriptLanguage::CodeCompletionOption hint2("inout", ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
			hint2.insert_text = hint2.display.quote(p_quote_style);
			r_result.insert(hint2.display, hint2);
		}
	} else if (p_annotation->name == SNAME("@export_node_path")) {
		ScriptLanguage::CodeCompletionOption node("Node", ScriptLanguage::CODE_COMPLETION_KIND_CLASS);
		node.insert_text = node.display.quote(p_quote_style);
		r_result.insert(node.display, node);
		List<StringName> native_classes;
		ClassDB::get_inheriters_from_class("Node", &native_classes);
		for (const StringName &E : native_classes) {
			if (!ClassDB::is_class_exposed(E)) {
				continue;
			}
			ScriptLanguage::CodeCompletionOption option(E, ScriptLanguage::CODE_COMPLETION_KIND_CLASS);
			option.insert_text = option.display.quote(p_quote_style);
			r_result.insert(option.display, option);
		}
		List<StringName> global_script_classes;
		ScriptServer::get_global_class_list(&global_script_classes);
		for (const StringName &E : global_script_classes) {
			if (!ClassDB::is_parent_class(ScriptServer::get_global_class_native_base(E), "Node")) {
				continue;
			}
			ScriptLanguage::CodeCompletionOption option(E, ScriptLanguage::CODE_COMPLETION_KIND_CLASS);
			option.insert_text = option.display.quote(p_quote_style);
			r_result.insert(option.display, option);