TAIPEI, Taiwan -- Actor and professional wrestler John Cena has apologized to fans in China after he called Taiwan a country in a promotional interview for his upcoming film and became the latest celebrity to face the fury of Chinese nationalists.In a short video posted Tuesday on Chinese social media site Weibo, Cena did not refer to Taiwan or go into much detail about the incident, which occurred earlier this month when he was doing a promotion for “Fast & Furious 9” with Taiwanese media.“In