When John Cena starts making apologies to the Chinese Communist Party, you know it’s time for him to tap out. On Tuesday, the pro wrestler and star of “F9,” the latest “Fast and Furious” flick, managed to look like a fool stuck in a bad scissor hold as he publicly confessed to thought crimes by referring to Taiwan as a country during film promo interviews. “I made a mistake,” Cena said in Mandarin on Weibo, China’s popular social-media platform. “Now I have to say one thing which is very, very, very important: I love and respect China and Chinese people....