### 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
_node_selected();
}
void SceneTreeDock::_set_owners(Node *p_owner, const Array &p_nodes) {
	for (int i = 0; i < p_nodes.size(); i++) {
		Node *n = Object::cast_to<Node>(p_nodes[i]);
		if (!n) {
			continue;
		}
		n->set_owner(p_owner);
	}
}
void SceneTreeDock::_fill_path_renames(Vector<StringName> base_path, Vector<StringName> new_base_path, Node *p_node, HashMap<Node *, NodePath> *p_renames) {
	base_path.push_back(p_node->get_name());
	NodePath new_path;
	if (!new_base_path.is_empty()) {
		new_base_path.push_back(p_node->get_name());
		new_path = NodePath(new_base_path, true);
	}
	p_renames->insert(p_node, new_path);
	for (int i = 0; i < p_node->get_child_count(); i++) {
		_fill_path_renames(base_path, new_base_path, p_node->get_child(i), p_renames);
	}
}
bool SceneTreeDock::_has_tracks_to_delete(Node *p_node, List<Node *> &p_to_delete) const {