By Mollie Quirk Prince Harry and Meghan Markle will want to give the Prince and Princess of Wales “space”, it has been claimed by an expert. Princess Catherine of Wales revealed her cancer diagnosis on Friday, with the young mother-of-three announcing the news to the world at 6pm GMT in a moving video. The Princess’ diagnosis came after she underwent abdominal surgery at The London Clinic earlier this year. Prince Harry and Meghan Markle, who are believed to be somewhat estranged from the Waleses, were alleged to have found out about their sister-in-law’s health when the rest of the world did,…