### 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
scene_tree->set_selected(p_node, p_emit_selected);
}
void SceneTreeDock::_new_scene_from(String p_file) {
	List<Node *> selection = editor_selection->get_selected_node_list();
	if (selection.size() != 1) {
		accept->set_text(TTR("This operation requires a single selected node."));
		accept->popup_centered();
		return;
	}
	if (EditorNode::get_singleton()->is_scene_open(p_file)) {
		accept->set_text(TTR("Can't overwrite scene that is still open!"));
		accept->popup_centered();
		return;
	}
	Node *base = selection.front()->get();
	HashMap<const Node *, Node *> duplimap;
	Node *copy = base->duplicate_from_editor(duplimap);
	if (copy) {
		
		for (int i = 0; i < copy->get_child_count(false); i++) {
			_set_node_owner_recursive(copy->get_child(i, false), copy);
		}
		
		copy->set_unique_name_in_owner(false);
		Ref<PackedScene> sdata = memnew(PackedScene);
		Error err = sdata->pack(copy);
		memdelete(copy);
		if (err != OK) {