### Godot version

4.0 rc1

### System information

Windows 11, GTX 1080Ti, Vulkan

### Issue description

Automplete can't find any variables and methods on custom classes when the nodes are loaded with `@onready`:

simple_rotate.gd:
```gdscript
extends Node2D
class_name SimpleRotate

@export var shouldRotate : bool = true
```

machine.gd:
```gdscript
@onready var wheel1 : SimpleRotate = $Wheel

func start_motor():
	wheel1.sho... # Doesn't autocomplete, it can't find shouldRotate 
```

If I add another cast like below, autocomplete does work:
machine.gd:
```gdscript
@onready var wheel1 : SimpleRotate = $Wheel as SimpleRotate

func start_motor():
	wheel1.shouldRotate = true # Autocomplete works
```

To make things even weirder, it does work if I make Wheel into a unique name and access it using %:
machine.gd:
```gdscript
@onready var wheel1 : SimpleRotate = $"%Wheel"

func start_motor():
	wheel1.shouldRotate = true # Autocomplete works
```


### Steps to reproduce

- Create a script with a class_name
- Add that script to a node
- Create another script referencing the node with the type of the script
- Try to let automcomplete find any methods or variables on the script with the class_name
- Notice that it fails

### Minimal reproduction project

N/A
static int recursion_depth = 0;
	RecursionCheck recursion(&recursion_depth);
	if (unlikely(recursion.check())) {
		ERR_FAIL_V_MSG(false, "Reached recursion limit while trying to guess type.");
	}
	GDScriptParser::DataType base_type = p_base.type;
	bool is_static = base_type.is_meta_type;
	if (is_static && p_method == SNAME("new")) {
		r_type.type = base_type;
		r_type.type.is_meta_type = false;
		r_type.type.is_constant = false;
		return true;
	}
	while (base_type.is_set() && !base_type.is_variant()) {
		switch (base_type.kind) {
			case GDScriptParser::DataType::CLASS:
				if (base_type.class_type->has_function(p_method)) {
					const GDScriptParser::FunctionNode *method = base_type.class_type->get_member(p_method).function;
					if (!is_static || method->is_static) {
						if (method->get_datatype().is_set() && !method->get_datatype().is_variant()) {
							r_type.type = method->get_datatype();
							return true;
						}
						int last_return_line = -1;
						const GDScriptParser::ExpressionNode *last_returned_value = nullptr;
						GDScriptParser::CompletionContext c = p_context;
						c.current_class = base_type.class_type;