### Tested versions

- Reproducible in: v4.2.stable.arch_linux
- Not Reproducible in: v4.1.3.stable.official [f06b6836a]

### System information

Garuda Linux (2.6.19-2)

### Issue description

A minor issue where UI Icons are not rendering on the Group Editor window, attaching a screenshot for reference:
![Screenshot_604](https://github.com/godotengine/godot/assets/22623256/c366164a-3d9a-4dcf-97a0-199b5a5a7ecc)

The icons were expected for Buttons like Add, Remove, Filter, etc.

### Steps to reproduce

Select any Node and go to the `Node` panel, click `Manage Groups` and the window will open.

### Minimal reproduction project (MRP)

Minor issue, easily reproducible following the above steps.
popup_centered();
	groups->clear();
	groups_root = groups->create_item();
	nodes_to_add->clear();
	nodes_to_remove->clear();
	add_group_text->clear();
	add_filter->clear();
	remove_filter->clear();
	_load_groups(scene_tree->get_edited_scene_root());
}
void GroupDialog::_bind_methods() {
	ClassDB::bind_method("_delete_group_item", &GroupDialog::_delete_group_item);
	ClassDB::bind_method("_add_group", &GroupDialog::_add_group);
	ClassDB::bind_method("_rename_group_item", &GroupDialog::_rename_group_item);
	ClassDB::bind_method("_group_selected", &GroupDialog::_group_selected);
	ADD_SIGNAL(MethodInfo("group_edited"));
}
GroupDialog::GroupDialog() {