She knew full well that it would never come to pass. There's not a court in the land that would enforce this as it's a clear breach of Article 25 of the 1948 Universal Declaration of Human Rights.
'Everyone has the right to a standard of living adequate for health and well-being of himself and of his family, including food, clothing, housing and medical care and necessary social services, and the right to security in the event of unemployment, sickness, disability widowhood, old age or other lack of livelihood in circumstances beyond his control'
Sunak dumped it as it's a can of worms the tories definitely don't want to be opening in front of a judge.