### 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
ERR_FAIL_COND(p_recursion_depth > COMPLETION_RECURSION_LIMIT);
	GDScriptParser::DataType base_type = p_base.type;
	if (base_type.is_meta_type && base_type.kind != GDScriptParser::DataType::BUILTIN && base_type.kind != GDScriptParser::DataType::ENUM) {
		ScriptLanguage::CodeCompletionOption option("new", ScriptLanguage::CODE_COMPLETION_KIND_FUNCTION, ScriptLanguage::LOCATION_LOCAL);
		option.insert_text += "(";
		r_result.insert(option.display, option);
	}
	while (!base_type.has_no_type()) {
		switch (base_type.kind) {
			case GDScriptParser::DataType::CLASS: {
				_find_identifiers_in_class(base_type.class_type, p_only_functions, base_type.is_meta_type, false, r_result, p_recursion_depth);
				
				base_type = GDScriptParser::DataType();
			} break;
			case GDScriptParser::DataType::SCRIPT: {
				Ref<Script> scr = base_type.script_type;
				if (scr.is_valid()) {
					if (!p_only_functions) {
						if (!base_type.is_meta_type) {
							List<PropertyInfo> members;
							scr->get_script_property_list(&members);
							for (const PropertyInfo &E : members) {
								int location = p_recursion_depth + _get_property_location(scr->get_class_name(), E.name);
								ScriptLanguage::CodeCompletionOption option(E.name, ScriptLanguage::CODE_COMPLETION_KIND_MEMBER, location);
								r_result.insert(option.display, option);