The fantasy saga “Game of Thrones” received a leading 24 Emmy Awards nominations Thursday. The drama wasn’t hurt by controversy over its depiction of a female character’s rape, earning five more nominations than it did last year. It’s a contender again for best drama series, an award that has eluded it. The TV academy recognized the increasingly diverse talent on TV, giving best actress nods to black stars Taraji P. Henson for “Empire” and Viola Davis for “How to Get Away with Murder. That sets up a possibility of a history-making win: An African-American actress has never won the top drama acting award.