By Michael Rosenberg Last summer’s Games in Tokyo were a challenge, but these have been exponentially harder, with the Chinese government’s COVID-19 protocols and the “closed loop” system presenting an extra layer of difficulty for athletes. BEIJING — Every Olympics is disorienting, like being inside a foreign country inside another foreign country. The Olympics give you no sense that anything is happening outside of the Olympics. There is a giant slalom over here and bobsled not far away and halfpipe on another mountain and figure skating down in the city, and all of it feels esoteric but ext…