### 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
d[key.value] = value.value;
						} else {
							full = false;
							break;
						}
					} else {
						full = false;
						break;
					}
				}
				if (full) {
					r_type.value = d;
					r_type.type.is_constant = true;
				}
				r_type.type.type_source = GDScriptParser::DataType::ANNOTATED_EXPLICIT;
				r_type.type.kind = GDScriptParser::DataType::BUILTIN;
				r_type.type.builtin_type = Variant::DICTIONARY;
				found = true;
			} break;
			case GDScriptParser::Node::ARRAY: {
				
				const GDScriptParser::ArrayNode *an = static_cast<const GDScriptParser::ArrayNode *>(p_expression);
				Array a;
				bool full = true;
				a.resize(an->elements.size());
				for (int i = 0; i < an->elements.size(); i++) {
					GDScriptCompletionIdentifier value;
					if (_guess_expression_type(p_context, an->elements[i], value)) {
						if (value.type.is_constant) {
							a[i] = value.value;