### Godot version

ef025711a

### System information

ArchLinux x11

### Issue description

Accessing a scene unique node like this:
```gdscript
class_name Class extends Node
static func get_label() -> Label:
	return %label
```
and then accessing that class later:
```gdscript
func _ready() -> void:
	Main.get_label().text = "hello world"
```
causes a strange error when in the editor, and a normal error when run directly.
![image](https://user-images.githubusercontent.com/70787919/229785642-6aad4e31-6bd9-4eb5-bee4-7445b48a99bb.png)
```c++
ERROR: Node not found: "%label" (relative to "/root/main").
   at: get_node (scene/main/node.cpp:1364)
```
Instead of returning null.
As opposed to when using `get_node`:
```

SCRIPT ERROR: Cannot call method 'get_node' on a null value.
          at: get_label (res://main.gd:5)
SCRIPT ERROR: Invalid set index 'text' (on base: 'Nil') with value of type 'String'.
          at: _ready (res://control.gd:4)
```

### Steps to reproduce

Run mrp or follow outlined steps

### Minimal reproduction project

[bug.zip](https://github.com/godotengine/godot/files/11148287/bug.zip)

#ifdef DEBUG_ENABLED
	if (this->_is_tool) {
		push_error(R"("@tool" annotation can only be used once.)", p_annotation);
		return false;
	}
#endif 
	this->_is_tool = true;
	return true;
}
bool GDScriptParser::icon_annotation(const AnnotationNode *p_annotation, Node *p_node) {
	ERR_FAIL_COND_V_MSG(p_node->type != Node::CLASS, false, R"("@icon" annotation can only be applied to classes.)");
	ERR_FAIL_COND_V(p_annotation->resolved_arguments.is_empty(), false);
	ClassNode *p_class = static_cast<ClassNode *>(p_node);
#ifdef DEBUG_ENABLED
	if (!p_class->icon_path.is_empty()) {
		push_error(R"("@icon" annotation can only be used once.)", p_annotation);
		return false;
	}
	if (String(p_annotation->resolved_arguments[0]).is_empty()) {
		push_error(R"("@icon" annotation argument must contain the path to the icon.)", p_annotation->arguments[0]);
		return false;
	}
#endif 
	p_class->icon_path = p_annotation->resolved_arguments[0];
	return true;
}
bool GDScriptParser::onready_annotation(const AnnotationNode *p_annotation, Node *p_node) {