### 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
Pair<String, Variant> pi;
	pi.first = "PI";
	pi.second = Math_PI;
	p_constants->push_back(pi);
	Pair<String, Variant> tau;
	tau.first = "TAU";
	tau.second = Math_TAU;
	p_constants->push_back(tau);
	Pair<String, Variant> infinity;
	infinity.first = "INF";
	infinity.second = INFINITY;
	p_constants->push_back(infinity);
	Pair<String, Variant> nan;
	nan.first = "NAN";
	nan.second = NAN;
	p_constants->push_back(nan);
}
void GDScriptLanguage::get_public_annotations(List<MethodInfo> *p_annotations) const {
	GDScriptParser parser;
	List<MethodInfo> annotations;
	parser.get_annotation_list(&annotations);
	for (const MethodInfo &E : annotations) {
		p_annotations->push_back(E);
	}
}
String GDScriptLanguage::make_function(const String &p_class, const String &p_name, const PackedStringArray &p_args) const {