### Godot version

v4.1.rc1.official [1f9e540f1]

### System information

Windows 10

### Issue description

Attempting to reorder the children of a TabContainer results in an unintended ordering and incorrect undo states.

Also happens in v4.0.3.stable.official [5222a99f5].

https://github.com/godotengine/godot/assets/3820082/2c2458e3-88ad-46d9-8a04-f289a049984a



### Steps to reproduce

1. Add a new TabContainer
2. Add a few children to it
3. Drag and drop to erroneously reorder them
4. Attempt to undo the change

### Minimal reproduction project

N/A
if (selected_shader_material.is_null()) {
		return;
	}
	String path = selected_shader_material->get_path();
	if (path.is_empty()) {
		String root_path;
		if (editor_data->get_edited_scene_root()) {
			root_path = editor_data->get_edited_scene_root()->get_scene_file_path();
		}
		String shader_name;
		if (selected_shader_material->get_name().is_empty()) {
			shader_name = root_path.get_file();
		} else {
			shader_name = selected_shader_material->get_name();
		}
		if (root_path.is_empty()) {
			path = String("res://").path_join(shader_name);
		} else {
			path = root_path.get_base_dir().path_join(shader_name);
		}
	}
	shader_create_dialog->connect("shader_created", callable_mp(this, &SceneTreeDock::_shader_created));
	shader_create_dialog->connect("confirmed", callable_mp(this, &SceneTreeDock::_shader_creation_closed));
	shader_create_dialog->connect("canceled", callable_mp(this, &SceneTreeDock::_shader_creation_closed));
	shader_create_dialog->config(path, true, true, -1, p_preferred_mode);
	shader_create_dialog->popup_centered();
}
void SceneTreeDock::open_shader_dialog(const Ref<ShaderMaterial> &p_for_material, int p_preferred_mode) {