### 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
}
				List<MethodInfo> virtual_methods;
				ClassDB::get_virtual_methods(class_name, &virtual_methods, true);
				for (const MethodInfo &E : virtual_methods) {
					if (E.name == p_symbol) {
						r_result.type = ScriptLanguage::LOOKUP_RESULT_CLASS_METHOD;
						r_result.class_name = base_type.native_type;
						r_result.class_member = p_symbol;
						return OK;
					}
				}
				if (ClassDB::has_signal(class_name, p_symbol, true)) {
					r_result.type = ScriptLanguage::LOOKUP_RESULT_CLASS_SIGNAL;
					r_result.class_name = base_type.native_type;
					r_result.class_member = p_symbol;
					return OK;
				}
				StringName enum_name = ClassDB::get_integer_constant_enum(class_name, p_symbol, true);
				if (enum_name != StringName()) {
					r_result.type = ScriptLanguage::LOOKUP_RESULT_CLASS_ENUM;
					r_result.class_name = base_type.native_type;
					r_result.class_member = enum_name;
					return OK;
				}
				List<String> constants;
				ClassDB::get_integer_constant_list(class_name, &constants, true);
				for (const String &E : constants) {
					if (E == p_symbol) {
						r_result.type = ScriptLanguage::LOOKUP_RESULT_CLASS_CONSTANT;
						r_result.class_name = base_type.native_type;