Harry, Duke of Sussex, has been warned that Meghan Markle could “steal” his “spotlight” if she accompanies him to the U.K. in May. “I think Harry’s really outside the door when it comes to who is in the spotlight,” royal expert Angela Levin told an outlet. “She [Meghan] couldn’t even do that because she was all me, me, me, she was talking about, and not asking interesting people what their lives were, and instead actually telling them about herself,” Levin observed when discussing Meghan’s past participation in Invictus Games events. “She didn’t let anybody in.” Levin added: “And a lot of thin…