Prince Harry and Prince William’s rivalry continues amid royal health crises, but experts wonder if things would be different between the brothers if their mom, Princess Diana, was still alive. In Spare, Harry opened up about the struggles of growing up in the Prince of Wales’ shadow and threw several jabs at William in his storytelling process. “I think Diana would have supported Harry in his move, although I think she would also have found a way to bridge the rift between the brothers,” royal expert Jennie Bond told an outlet. “She [Diana] would certainly have approved of Harry’s efforts to …