### 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
}
					r_arghint = _make_arguments_hint(info, p_argidx);
				}
				if (p_argidx == 0 && ClassDB::is_parent_class(class_name, SNAME("Node")) && (p_method == SNAME("get_node") || p_method == SNAME("has_node"))) {
					
					List<PropertyInfo> props;
					ProjectSettings::get_singleton()->get_property_list(&props);
					for (const PropertyInfo &E : props) {
						String s = E.name;
						if (!s.begins_with("autoload/")) {
							continue;
						}
						String name = s.get_slice("/", 1);
						ScriptLanguage::CodeCompletionOption option("/root/" + name, ScriptLanguage::CODE_COMPLETION_KIND_NODE_PATH);
						option.insert_text = option.display.quote(quote_style);
						r_result.insert(option.display, option);
					}
				}
				if (p_argidx == 0 && method_args > 0 && ClassDB::is_parent_class(class_name, SNAME("InputEvent")) && p_method.operator String().contains("action")) {
					
					List<PropertyInfo> props;
					ProjectSettings::get_singleton()->get_property_list(&props);
					for (const PropertyInfo &E : props) {
						String s = E.name;
						if (!s.begins_with("input/")) {
							continue;
						}
						String name = s.get_slice("/", 1);
						ScriptLanguage::CodeCompletionOption option(name, ScriptLanguage::CODE_COMPLETION_KIND_CONSTANT);
						option.insert_text = option.display.quote(quote_style);