### 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 !(this->operator==(p_other));
		}
		void operator=(const DataType &p_other) {
			kind = p_other.kind;
			type_source = p_other.type_source;
			is_read_only = p_other.is_read_only;
			is_constant = p_other.is_constant;
			is_meta_type = p_other.is_meta_type;
			is_pseudo_type = p_other.is_pseudo_type;
			is_coroutine = p_other.is_coroutine;
			builtin_type = p_other.builtin_type;
			native_type = p_other.native_type;
			enum_type = p_other.enum_type;
			script_type = p_other.script_type;
			script_path = p_other.script_path;
			class_type = p_other.class_type;
			method_info = p_other.method_info;
			enum_values = p_other.enum_values;
			unset_container_element_type();
			if (p_other.has_container_element_type()) {
				set_container_element_type(p_other.get_container_element_type());
			}
		}
		DataType() = default;
		DataType(const DataType &p_other) {
			*this = p_other;
		}
		~DataType() {
			unset_container_element_type();
		}