Meghan Markle and Prince Harry named their youngest child, Princess Lilibet, after Queen Elizabeth, but a new biography claimed the late monarch was outraged when the couple announced they used her childhood nickname for their little girl. Aside from Elizabeth’s rumored disapproval, one royal expert believes the Duchess of Sussex legally protected the moniker before the princess’ birth. “That’s an incredibly sad comment. I think one of the reasons she felt that way was because it was discovered that Megan, even before Lilibet was born, had taken out the names officially so that she could use t…