### Godot version

4.1 dev3

### System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

### Issue description

Trying to move a folder results in moving error and it's not moved.
Regression from #75330

A fix already exists, but I'm opening an issue so it's not lost (the PR isn't ready and not very active).

### Steps to reproduce

1. Add 2 folders in filesystem
2. Move one folder into another one

### Minimal reproduction project

N/A
String new_path;
	String new_path_base;
	if (p_entry.is_file) {
		new_path = p_at_path.path_join(p_entry.path.get_file());
		new_path_base = new_path.get_basename() + " (%d)." + new_path.get_extension();
	} else {
		PackedStringArray path_split = p_entry.path.split("/");
		new_path = p_at_path.path_join(path_split[path_split.size() - 2]);
		new_path_base = new_path + " (%d)";
	}
	int exist_counter = 1;
	Ref<DirAccess> da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
	while (da->file_exists(new_path) || da->dir_exists(new_path)) {
		exist_counter++;
		new_path = vformat(new_path_base, exist_counter);
	}
	return new_path;
}
void FileSystemDock::_update_favorites_list_after_move(const HashMap<String, String> &p_files_renames, const HashMap<String, String> &p_folders_renames) const {