New York City’s post-pandemic recovery has slowed as just a small fraction of Manhattan’s office workers have returned to work in-person, according to a survey published Monday. The findings — compiled by the Partnership for New York City, which represents the Big Apple’s largest employers — estimated 62% of Manhattan’s office employees worked remotely during a typical weekday in late April. And just 8% — or one in 12 — showed up to work in-person five days per week, the report shows. “The longer people worked remotely, the longer they wanted to continue to work remotely,” said Kathy Wylde, th…