on Destroy View
Called when the view previously created by onCreateView has been detached from the fragment.
Cleans up the binding reference to prevent memory leaks by setting lifecycleOwner to null and calling unbind().
onCreateView에서 생성된 뷰가 Fragment에서 분리될 때 호출됩니다.
lifecycleOwner를 null로 설정하고 unbind()를 호출하여 메모리 누수를 방지하기 위해 바인딩 참조를 정리합니다.