Meghan Markle is celebrating her 43rd birthday on Sunday, August 4, and King Charles and Queen Camilla might reach out to the Duchess of Sussex in honor of her big day. “Harry will make sure that Meghan is celebrated. I think they will get messages from the King and the Queen, whether that be electronically or by old-fashioned mail, I still think the King and Queen will still send birthday messages,” Grant Harrold said on behalf of Slingo. “I don’t think that will change certainly despite everything that’s happened.” In the past, the royals honored the Duchess of Sussex’s special day on X, for…