### Godot version

v4.2.beta2.official [f8818f85e]

### System information

Windows 10, 64bit

### Issue description

Some times can't add node in visualshader editor

### Steps to reproduce

1. Open a VisualShader file for edit.
2. Click the `Add Node...` button, it will popup menu, it is OK.
3. Direct close the menu.
4. Clikd the `Add Node...` again, the menu can't popup.
![GIF](https://github.com/godotengine/godot/assets/35988767/1326c63e-3e05-4423-9ec7-7ce305b3f4f5)

### Minimal reproduction project

/
TreeItem *category = members->get_root()->get_first_child();
	switch (p_idx) {
		case EXPAND_ALL:
			while (category) {
				category->set_collapsed(false);
				TreeItem *sub_category = category->get_first_child();
				while (sub_category) {
					sub_category->set_collapsed(false);
					sub_category = sub_category->get_next();
				}
				category = category->get_next();
			}
			break;
		case COLLAPSE_ALL:
			while (category) {
				category->set_collapsed(true);
				TreeItem *sub_category = category->get_first_child();
				while (sub_category) {
					sub_category->set_collapsed(true);
					sub_category = sub_category->get_next();
				}
				category = category->get_next();
			}
			break;
		default:
			break;
	}
}
void VisualShaderEditor::_node_menu_id_pressed(int p_idx) {