TOKYO—A Belarusian athlete at the center of an Olympic standoff with her own country walked into Poland’s embassy in Japan on Monday, a day after refusing to board a flight home she said she was being forced to take against her wishes by her team. Krystsina Tsimanouskaya, 24, would seek asylum in Poland, said a member of the local Belarus community who was in touch with her. Polish consular officials did not respond to requests for confirmation or comment. Earlier, Polish foreign ministry official Marcin Przydacz wrote on Twitter that Tsimanouskaya has been “offered a humanitarian visa and is free to pursue her sporting career in Poland if she so chooses.” The sprinter pulled up in front of the embassy in an unmarked silver van about 5 p.m. local time. She stepped out with her official team luggage, and then greeted two officials before entering the premises. Two women, one …