EDMONTON — Connor McDavid skated Thursday and has not been ruled out to play in the 2023 Tim Hortons NHL Heritage Classic against the Calgary Flames at Commonwealth Stadium on Sunday (7 p.m. ET; SN, TVAS, TBS, Max). McDavid missed his second straight game with an upper-body injury Thursday, a 3-0 loss to the New York Rangers at Rogers Place. The Oilers …