SAN JOSE, Calif. — Two Sharks home games this week against Canadian-based teams were among 12 postponed by the NHL on Sunday as the league halted all cross-border travel prior to Christmas over increasing COVID-related concerns. In a joint announcement with NHL Players’ Association, the league said all games between and American and Canadian-based teams between Monday and Thursday would be rescheduled, “due to the concern about cross-border travel and, given the fluid nature of federal travel restrictions.” The Sharks were slated to play the Vancouver Canucks on Tuesday and the Edmonton Oilers…