### 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
w.end_line = warn.end_line;
			w.leftmost_column = warn.leftmost_column;
			w.rightmost_column = warn.rightmost_column;
			w.code = (int)warn.code;
			w.string_code = GDScriptWarning::get_name_from_code(warn.code);
			w.message = warn.get_message();
			r_warnings->push_back(w);
		}
	}
#endif
	if (err) {
		if (r_errors) {
			for (const GDScriptParser::ParserError &pe : parser.get_errors()) {
				ScriptLanguage::ScriptError e;
				e.path = p_path;
				e.line = pe.line;
				e.column = pe.column;
				e.message = pe.message;
				r_errors->push_back(e);
			}
			for (KeyValue<String, Ref<GDScriptParserRef>> E : analyzer.get_depended_parsers()) {
				GDScriptParser *depended_parser = E.value->get_parser();
				for (const GDScriptParser::ParserError &pe : depended_parser->get_errors()) {
					ScriptLanguage::ScriptError e;
					e.path = E.key;
					e.line = pe.line;
					e.column = pe.column;
					e.message = pe.message;
					r_errors->push_back(e);
				}