DALLAS — If not for what looked like a serious injury to Alexander Romanov in the final minute of Tuesday’s game, you would be calling this the best road trip the Islanders have had in a hot minute. Their fifth win in six on the road, which snapped a five-game Stars winning streak on Tuesday night by a 3-2 score that came in gritty, grinding fashion, confirmed as much. The Islanders have now won games in all four time zones on this trip, which finally ends in Detroit on Thursday, and not one of