King Charles and Prince Harry’s relationship was greatly impacted by the Duke of Sussex’s dramatic move to the U.S., but one royal expert believes His Majesty is open to mending things with his youngest child. “The King has always kept the door open to Harry, but that doesn’t necessarily mean that he would invariably get a warm reception,” Richard Fitzwilliams told an outlet. “It will take its time. But clearly, the situation has changed in recent weeks beyond all expectations. I don’t think it would be too difficult, it depends how you define reconcile,” the commentator continued. “I think th…