### 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)

return err;
			}
			base = ext_parser->get_parser()->head->get_datatype();
		} else {
			if (p_class->extends.is_empty()) {
				push_error("Could not resolve an empty super class path.", p_class);
				return ERR_PARSE_ERROR;
			}
			GDScriptParser::IdentifierNode *id = p_class->extends[extends_index++];
			const StringName &name = id->name;
			base.type_source = GDScriptParser::DataType::ANNOTATED_EXPLICIT;
			if (ScriptServer::is_global_class(name)) {
				String base_path = ScriptServer::get_global_class_path(name);
				if (base_path == parser->script_path) {
					base = parser->head->get_datatype();
				} else {
					Ref<GDScriptParserRef> base_parser = get_parser_for(base_path);
					if (base_parser.is_null()) {
						push_error(vformat(R"(Could not resolve super class "%s".)", name), id);
						return ERR_PARSE_ERROR;
					}
					Error err = base_parser->raise_status(GDScriptParserRef::INHERITANCE_SOLVED);
					if (err != OK) {
						push_error(vformat(R"(Could not resolve super class inheritance from "%s".)", name), id);
						return err;
					}
					base = base_parser->get_parser()->head->get_datatype();
				}
			} else if (ProjectSettings::get_singleton()->has_autoload(name) && ProjectSettings::get_singleton()->get_autoload(name).is_singleton) {
				const ProjectSettings::AutoloadInfo &info = ProjectSettings::get_singleton()->get_autoload(name);