### 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
shader_create_dialog->disconnect("shader_created", callable_mp(this, &SceneTreeDock::_shader_created));
	shader_create_dialog->disconnect("confirmed", callable_mp(this, &SceneTreeDock::_shader_creation_closed));
	shader_create_dialog->disconnect("canceled", callable_mp(this, &SceneTreeDock::_shader_creation_closed));
}
void SceneTreeDock::_toggle_editable_children_from_selection() {
	List<Node *> selection = editor_selection->get_selected_node_list();
	List<Node *>::Element *e = selection.front();
	if (e) {
		_toggle_editable_children(e->get());
	}
}
void SceneTreeDock::_toggle_placeholder_from_selection() {
	List<Node *> selection = editor_selection->get_selected_node_list();
	List<Node *>::Element *e = selection.front();
	if (e) {
		Node *node = e->get();
		if (node) {
			_toggle_editable_children(node);
			bool placeholder = node->get_scene_instance_load_placeholder();
			placeholder = !placeholder;
			node->set_scene_instance_load_placeholder(placeholder);
			scene_tree->update_tree();
		}
	}
}
void SceneTreeDock::_toggle_editable_children(Node *p_node) {