### Godot version

v4.1.1.stable.official [bd6af8e0e]

### System information

Godot v4.1.1.stable - Debian GNU/Linux trixie/sid trixie - Vulkan (Compatibility) - Mesa Intel(R) HD Graphics 520 (SKL GT2) () - Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz (4 Threads)

### Issue description

After right clicking in thet "Filter Nodes" menu in the scene tree dock, the sub-menu is populated with a "Search" icon.

If I later switch themes in the same session, this icon is never updated to match the new theme.

![image](https://github.com/godotengine/godot/assets/660911/14336bb3-12ca-48c8-b030-8ada6ac27ec6)


### Steps to reproduce

1. Right click in the "Filter Nodes" menu in scene tree dock
2. Switch themes
3. Right click again in the "Filter Nodes" menu

Expected result: Icon has updated to match the theme I am currently using
Actual result: Icon is still using the theme I launched Godot with

### Minimal reproduction project

N/A
}
			ERR_FAIL_MSG("Script does not extend Node-derived type.");
		}
		new_node->set_name(Node::adjust_name_casing(p_file.get_file().get_basename()));
		new_node->set_script(scr);
		undo_redo->create_action(TTR("Instantiate Script"));
		undo_redo->add_do_method(n, "add_child", new_node, true);
		undo_redo->add_do_method(new_node, "set_owner", edited_scene);
		undo_redo->add_do_method(editor_selection, "clear");
		undo_redo->add_do_method(editor_selection, "add_node", new_node);
		undo_redo->add_do_reference(new_node);
		undo_redo->add_undo_method(n, "remove_child", new_node);
		EditorDebuggerNode *ed = EditorDebuggerNode::get_singleton();
		undo_redo->add_do_method(ed, "live_debug_create_node", edited_scene->get_path_to(n), new_node->get_class(), new_node->get_name());
		undo_redo->add_undo_method(ed, "live_debug_remove_node", NodePath(String(edited_scene->get_path_to(n)).path_join(new_node->get_name())));
		undo_redo->commit_action();
	} else {
		undo_redo->create_action(TTR("Attach Script"), UndoRedo::MERGE_DISABLE, n);
		undo_redo->add_do_method(InspectorDock::get_singleton(), "store_script_properties", n);
		undo_redo->add_undo_method(InspectorDock::get_singleton(), "store_script_properties", n);
		undo_redo->add_do_method(n, "set_script", scr);
		undo_redo->add_undo_method(n, "set_script", n->get_script());
		undo_redo->add_do_method(InspectorDock::get_singleton(), "apply_script_properties", n);
		undo_redo->add_undo_method(InspectorDock::get_singleton(), "apply_script_properties", n);
		undo_redo->add_do_method(this, "_update_script_button");
		undo_redo->add_undo_method(this, "_update_script_button");
		undo_redo->commit_action();
	}
}
void SceneTreeDock::_nodes_dragged(Array p_nodes, NodePath p_to, int p_type) {