King Charles is said to be concerned Prince Harry and Meghan Markle may misinterpret the homemade birthday gift he sent to Archie for his fifth birthday this week. The monarch is believed to have sent over the sweet present to his grandson, who lives in California with his mother and father. Prince Harry and the Duchess of Sussex moved to their Montecito mansion when the youngster was just a year old, so he’s lived in the States longer than he did in the UK. For Archie’s birthday, which took place on May 6, King Charles reportedly sent the little one a homemade present to mark the occasion. Ki…