### 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
if (member.constant->initializer && member.constant->initializer->is_constant) {
								r_type.value = member.constant->initializer->reduced_value;
							}
							return true;
						case GDScriptParser::ClassNode::Member::VARIABLE:
							if (!is_static || member.variable->is_static) {
								if (member.variable->get_datatype().is_set() && !member.variable->get_datatype().is_variant()) {
									r_type.type = member.variable->get_datatype();
									return true;
								} else if (member.variable->initializer) {
									const GDScriptParser::ExpressionNode *init = member.variable->initializer;
									if (init->is_constant) {
										r_type.value = init->reduced_value;
										r_type = _type_from_variant(init->reduced_value);
										return true;
									} else if (init->start_line == p_context.current_line) {
										return false;
										
									} else if (_is_expression_named_identifier(init, member.variable->identifier->name)) {
										if (member.variable->initializer->get_datatype().is_set()) {
											r_type.type = member.variable->initializer->get_datatype();
										} else if (member.variable->get_datatype().is_set() && !member.variable->get_datatype().is_variant()) {
											r_type.type = member.variable->get_datatype();
										}
										return true;
									} else if (_guess_expression_type(p_context, init, r_type)) {
										return true;
									} else if (init->get_datatype().is_set() && !init->get_datatype().is_variant()) {
										r_type.type = init->get_datatype();
										return true;