### 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
}
			if (updated) {
				r_variant = a;
				return true;
			}
		} break;
		case Variant::DICTIONARY: {
			Dictionary d = r_variant;
			bool updated = false;
			for (int i = 0; i < d.size(); i++) {
				Variant value = d.get_value_at_index(i);
				if (_check_node_path_recursive(p_root_node, value, p_renames)) {
					if (!updated) {
						d = d.duplicate(); 
						updated = true;
					}
					d[d.get_key_at_index(i)] = value;
				}
			}
			if (updated) {
				r_variant = d;
				return true;
			}
		} break;
		default: {
		}
	}
	return false;
}
void SceneTreeDock::perform_node_renames(Node *p_base, HashMap<Node *, NodePath> *p_renames, HashMap<Ref<Animation>, HashSet<int>> *r_rem_anims) {