PHILADELPHIA — Tyrese Maxey broke character as he walked away from the podium late Thursday night. He had been asked whether his orange-and-black striped shirt was an homage to the Flyers, who had sent their chapter of the Philadelphia faithful home grinning just 24 hours earlier with a thrilling overtime victory over the Pittsburgh Penguins to win their playoff series at Xfinity Mobile Arena. The stone-faced guard smiled and claimed it was inadvertent, and that he realized he was wearing Flyers colors as he walked into work earlier in the evening. "Shout out to the Flyers," Maxey said. Maxey's face behind the microphone was not one of jubilance. His expression was what you'd expect of a lead guard whose team was down in the series, three games to one. Perhaps it was nothing, just a guy doing another media availability late at night after a hard-fought win. Or perhaps it was because there was nothing to be happy about yet. The job isn't finished. "We're not done yet.…