### 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

push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": Expected flag name.)", i + 1), p_annotation->arguments[i]);
				return false;
			}
			if (t.size() == 2) {
				if (t[1].is_empty()) {
					push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": Expected flag value.)", i + 1), p_annotation->arguments[i]);
					return false;
				}
				if (!t[1].is_valid_int()) {
					push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": The flag value must be a valid integer.)", i + 1), p_annotation->arguments[i]);
					return false;
				}
				int64_t value = t[1].to_int();
				if (value < 1 || value >= (1LL << max_flags)) {
					push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": The flag value must be at least 1 and at most 2 ** %d - 1.)", i + 1, max_flags), p_annotation->arguments[i]);
					return false;
				}
			} else if (i >= max_flags) {
				push_error(vformat(R"(Invalid argument %d of annotation "@export_flags": Starting from argument %d, the flag value must be specified explicitly.)", i + 1, max_flags + 1), p_annotation->arguments[i]);
				return false;
			}
		}
		if (i > 0) {
			hint_string += ",";
		}
		hint_string += arg_string;
	}
	variable->export_info.hint_string = hint_string;
	
	DataType export_type = variable->get_datatype();