### 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
switch (get_icon_mode()) {
		case ItemList::ICON_MODE_LEFT:
			rect = get_item_rect(s, true);
			ofs = Vector2(0, Math::floor((MAX(line_editor->get_minimum_size().height, rect.size.height) - rect.size.height) / 2));
			popup_rect.position = get_screen_position() + rect.position - ofs;
			popup_rect.size = rect.size;
			
			popup_rect.size.x -= icon_size.x;
			popup_rect.position.x += icon_size.x;
			break;
		case ItemList::ICON_MODE_TOP:
			rect = get_item_rect(s, false);
			popup_rect.position = get_screen_position() + rect.position;
			popup_rect.size = rect.size;
			
			popup_rect.size.y -= icon_size.y;
			popup_rect.position.y += icon_size.y;
			break;
	}
	popup_editor->set_position(popup_rect.position);
	popup_editor->set_size(popup_rect.size);
	String name = get_item_text(s);
	line_editor->set_text(name);
	line_editor->select(0, name.rfind("."));
	popup_editor->popup();
	popup_editor->child_controls_changed();
	line_editor->grab_focus();
	return true;
}
String FileSystemList::get_edit_text() {