### 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
for (const PropertyInfo &E : pinfo) {
							if (E.usage & (PROPERTY_USAGE_GROUP | PROPERTY_USAGE_CATEGORY)) {
								continue;
							}
							if (E.name.contains("/")) {
								continue;
							}
							int location = p_recursion_depth + _get_property_location(type, E.name);
							ScriptLanguage::CodeCompletionOption option(E.name, ScriptLanguage::CODE_COMPLETION_KIND_MEMBER, location);
							r_result.insert(option.display, option);
						}
						List<MethodInfo> signals;
						ClassDB::get_signal_list(type, &signals);
						for (const MethodInfo &E : signals) {
							int location = p_recursion_depth + _get_signal_location(type, StringName(E.name));
							ScriptLanguage::CodeCompletionOption option(E.name, ScriptLanguage::CODE_COMPLETION_KIND_SIGNAL, location);
							r_result.insert(option.display, option);
						}
					}
				}
				bool only_static = base_type.is_meta_type && !Engine::get_singleton()->has_singleton(type);
				List<MethodInfo> methods;
				ClassDB::get_method_list(type, &methods, false, true);
				for (const MethodInfo &E : methods) {
					if (only_static && (E.flags & METHOD_FLAG_STATIC) == 0) {
						continue;
					}
					if (E.name.begins_with("_")) {
						continue;
					}