### 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
} else if ((String(dd["type"]) == "files") || (String(dd["type"]) == "files_and_dirs") || (String(dd["type"]) == "resource")) {
					tree->set_drop_mode_flags(Tree::DROP_MODE_ON_ITEM | Tree::DROP_MODE_INBETWEEN);
				} else if ((String(dd["type"]) == "nodes")) {
					holding_branch = true;
					TreeItem *item = tree->get_next_selected(tree->get_root());
					while (item) {
						tree_items_selected_on_drag_begin.push_back(item);
						item = tree->get_next_selected(item);
					}
					list_items_selected_on_drag_begin = files->get_selected_items();
				}
			}
		} break;
		case NOTIFICATION_DRAG_END: {
			tree->set_drop_mode_flags(0);
			if (holding_branch) {
				holding_branch = false;
				_reselect_items_selected_on_drag_begin(true);
			}
		} break;
		case NOTIFICATION_THEME_CHANGED: {
			overwrite_dialog_scroll->add_theme_style_override("panel", get_theme_stylebox("panel", "Tree"));
			if (is_visible_in_tree()) {
				_update_display_mode(true);
			}
		} break;
		case EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED: {
			
			button_reload->set_icon(get_theme_icon(SNAME("Reload"), SNAME("EditorIcons")));
			button_toggle_display_mode->set_icon(get_theme_icon(SNAME("Panels2"), SNAME("EditorIcons")));