### 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
}
							List<MethodInfo> signals;
							scr->get_script_signal_list(&signals);
							for (const MethodInfo &E : signals) {
								int location = p_recursion_depth + _get_signal_location(scr->get_class_name(), E.name);
								ScriptLanguage::CodeCompletionOption option(E.name, ScriptLanguage::CODE_COMPLETION_KIND_SIGNAL, location);
								r_result.insert(option.display, option);
							}
						}
						HashMap<StringName, Variant> constants;
						scr->get_constants(&constants);
						for (const KeyValue<StringName, Variant> &E : constants) {
							int location = p_recursion_depth + _get_constant_location(scr->get_class_name(), E.key);
							ScriptLanguage::CodeCompletionOption option(E.key.operator String(), ScriptLanguage::CODE_COMPLETION_KIND_CONSTANT, location);
							r_result.insert(option.display, option);
						}
					}
					List<MethodInfo> methods;
					scr->get_script_method_list(&methods);
					for (const MethodInfo &E : methods) {
						if (E.name.begins_with("@")) {
							continue;
						}
						int location = p_recursion_depth + _get_method_location(scr->get_class_name(), E.name);
						ScriptLanguage::CodeCompletionOption option(E.name, ScriptLanguage::CODE_COMPLETION_KIND_FUNCTION, location);
						if (E.arguments.size()) {
							option.insert_text += "(";
						} else {
							option.insert_text += "()";
						}