By Tatiana Krisztina A week ahead of Prince Harry’s visit to London, a royal expert believes that there’s a reason that his wife won’t be joining them. The Duke of Sussex is heading to the UK for a special service to commemorate the Invictus Games, an international Olympics-type competition for veterans and active military personnel around the world. Meghan Markle won’t be joining him, which is no surprise after royal author Omid Scobie said she “never wants to set foot again in England.” Harry is also attending the Service of Thanksgiving at St Paul’s Cathedral next Wednesday, which might be …