### 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
toolbar_hbc->add_child(current_path_line_edit);
	button_reload = memnew(Button);
	button_reload->connect("pressed", callable_mp(this, &FileSystemDock::_rescan));
	button_reload->set_focus_mode(FOCUS_NONE);
	button_reload->set_tooltip_text(TTR("Re-Scan Filesystem"));
	button_reload->hide();
	toolbar_hbc->add_child(button_reload);
	button_toggle_display_mode = memnew(Button);
	button_toggle_display_mode->set_toggle_mode(true);
	button_toggle_display_mode->connect("toggled", callable_mp(this, &FileSystemDock::_toggle_split_mode));
	button_toggle_display_mode->set_focus_mode(FOCUS_NONE);
	button_toggle_display_mode->set_tooltip_text(TTR("Toggle Split Mode"));
	button_toggle_display_mode->set_flat(true);
	toolbar_hbc->add_child(button_toggle_display_mode);
	toolbar2_hbc = memnew(HBoxContainer);
	toolbar2_hbc->add_theme_constant_override("separation", 0);
	top_vbc->add_child(toolbar2_hbc);
	tree_search_box = memnew(LineEdit);
	tree_search_box->set_h_size_flags(SIZE_EXPAND_FILL);
	tree_search_box->set_placeholder(TTR("Filter Files"));
	tree_search_box->connect("text_changed", callable_mp(this, &FileSystemDock::_search_changed).bind(tree_search_box));
	toolbar2_hbc->add_child(tree_search_box);
	tree_button_sort = _create_file_menu_button();
	toolbar2_hbc->add_child(tree_button_sort);
	file_list_popup = memnew(PopupMenu);
	add_child(file_list_popup);
	tree_popup = memnew(PopupMenu);
	add_child(tree_popup);
	split_box = memnew(VSplitContainer);
	split_box->set_v_size_flags(SIZE_EXPAND_FILL);