PITTSBURGH — When Franco Harris stepped to the podium to announce the Steelers’ second-round pick in the 2021 NFL Draft, Pat Freiermuth was in his parents’ house in suburban Boston and got a feeling what was coming next … well, sort of. “He said ‘Free-er-muth’ or something like that,” Freiermuth said with a laugh inside the Steelers locker room Wednesday. …