### 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)

current_enum = prev_enum;
					if (!member.enum_value.custom_value->is_constant) {
						push_error(R"(Enum values must be constant.)", member.enum_value.custom_value);
					} else if (member.enum_value.custom_value->reduced_value.get_type() != Variant::INT) {
						push_error(R"(Enum values must be integers.)", member.enum_value.custom_value);
					} else {
						member.enum_value.value = member.enum_value.custom_value->reduced_value;
						member.enum_value.resolved = true;
					}
				} else {
					check_class_member_name_conflict(p_class, member.enum_value.identifier->name, member.enum_value.parent_enum);
					if (member.enum_value.index > 0) {
						const GDScriptParser::EnumNode::Value &prev_value = member.enum_value.parent_enum->values[member.enum_value.index - 1];
						resolve_class_member(p_class, prev_value.identifier->name, member.enum_value.identifier);
						member.enum_value.value = prev_value.value + 1;
					} else {
						member.enum_value.value = 0;
					}
					member.enum_value.resolved = true;
				}
				
				member.enum_value.parent_enum->values.set(member.enum_value.index, member.enum_value);
				member.enum_value.identifier->set_datatype(make_enum_type(UNNAMED_ENUM, p_class->fqcn, false));
			} break;
			case GDScriptParser::ClassNode::Member::CLASS:
				check_class_member_name_conflict(p_class, member.m_class->identifier->name, member.m_class);
				
				if (!member.m_class->base_type.is_resolving()) {
					resolve_class_inheritance(member.m_class, p_source);
				}