### 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
int location = p_recursion_depth + _get_method_location(type, E.name);
					ScriptLanguage::CodeCompletionOption option(E.name, ScriptLanguage::CODE_COMPLETION_KIND_FUNCTION, location);
					if (E.arguments.size()) {
						option.insert_text += "(";
					} else {
						option.insert_text += "()";
					}
					r_result.insert(option.display, option);
				}
				return;
			} break;
			case GDScriptParser::DataType::ENUM:
			case GDScriptParser::DataType::BUILTIN: {
				Callable::CallError err;
				Variant tmp;
				Variant::construct(base_type.builtin_type, tmp, nullptr, 0, err);
				if (err.error != Callable::CallError::CALL_OK) {
					return;
				}
				if (!p_only_functions) {
					List<PropertyInfo> members;
					if (p_base.value.get_type() != Variant::NIL) {
						p_base.value.get_property_list(&members);
					} else {
						tmp.get_property_list(&members);
					}
					for (const PropertyInfo &E : members) {
						if (!String(E.name).contains("/")) {
							ScriptLanguage::CodeCompletionOption option(E.name, ScriptLanguage::CODE_COMPLETION_KIND_MEMBER);
							if (GDScriptParser::theme_color_names.has(E.name)) {