Undergraduates who were sophomores when COVID forced Rutgers to hold classes remotely came together on Sunday morning, as the university celebrated its 256th commencement — the school’s first full graduation ceremony since the start of the pandemic. With nerve-tinged excitement clear in the air, students gathered in SHI Stadium in Piscataway, wearing matching stoles boasting of their involvement in athletics, sororities, and other college activities, as they clustered in groups and posted photos to celebrate finishing up their degree programs. More than 19,300 students will receive degrees thi…