### Godot version

4.0.2

### System information

Windows 10

### Issue description

EDIT: this was fixed by removing the offending files listed with the MRP and then dragging them back in from my desktop after opening the project~

I was developing my game then suddenly this started happening. I can no longer playtest my game.
I am not 100% sure what caused this but I believe at the time I was making a new inherited scene, saved it, then moved some scenes in the FileSystem tab?

![image](https://user-images.githubusercontent.com/75141902/235264827-62419c7d-963b-4002-9452-a6493a9bfe25.png)


### Steps to reproduce

No idea aaa- x-x

### Minimal reproduction project

Since I have no idea what caused it here's my early project :'D
https://drive.google.com/file/d/14JFZ420AelUNjBIth78msHY29rNjB55_/view?usp=share_link

I was working on these when the error occurred:
- Slot_0.tcsn
- Slot_Clickable.tscn
- Slot_Orphan.tscn
- Slot_Orphan.gd

switch (kind) {
		case VARIANT:
			return "Variant";
		case BUILTIN:
			if (builtin_type == Variant::NIL) {
				return "null";
			}
			if (builtin_type == Variant::ARRAY && has_container_element_type()) {
				return vformat("Array[%s]", container_element_type->to_string());
			}
			return Variant::get_type_name(builtin_type);
		case NATIVE:
			if (is_meta_type) {
				return GDScriptNativeClass::get_class_static();
			}
			return native_type.operator String();
		case CLASS: