### 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
if (selected_strings.size() > 1) {
		selected_strings.sort_custom<NaturalNoCaseComparator>();
		String last_path = "";
		for (int i = 0; i < selected_strings.size(); i++) {
			if (!last_path.is_empty() && selected_strings[i].begins_with(last_path)) {
				selected_strings.remove_at(i);
				i--;
			}
			if (selected_strings[i].ends_with("/")) {
				last_path = selected_strings[i];
			}
		}
	}
	return selected_strings;
}
void FileSystemDock::_tree_rmb_option(int p_option) {