### 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)

bool all_is_constant = true;
	HashMap<int, GDScriptParser::ArrayNode *> arrays; 
	for (int i = 0; i < p_call->arguments.size(); i++) {
		reduce_expression(p_call->arguments[i]);
		if (p_call->arguments[i]->type == GDScriptParser::Node::ARRAY) {
			arrays[i] = static_cast<GDScriptParser::ArrayNode *>(p_call->arguments[i]);
		}
		all_is_constant = all_is_constant && p_call->arguments[i]->is_constant;
	}
	GDScriptParser::Node::Type callee_type = p_call->get_callee_type();
	GDScriptParser::DataType call_type;
	if (!p_call->is_super && callee_type == GDScriptParser::Node::IDENTIFIER) {
		
		StringName function_name = p_call->function_name;
		Variant::Type builtin_type = GDScriptParser::get_builtin_type(function_name);
		if (builtin_type < Variant::VARIANT_MAX) {
			
			call_type.type_source = GDScriptParser::DataType::ANNOTATED_EXPLICIT;
			call_type.kind = GDScriptParser::DataType::BUILTIN;
			call_type.builtin_type = builtin_type;
			if (builtin_type == Variant::OBJECT) {
				call_type.kind = GDScriptParser::DataType::NATIVE;
				call_type.native_type = function_name; 
			}
			bool safe_to_fold = true;
			switch (builtin_type) {
				
				
				case Variant::OBJECT:
				case Variant::DICTIONARY: