BOSTON — The longest winning streak in NBA history is still 10 victories away for the Miami Heat. So it will be a while before Dwyane Wade really focuses on matching the 33-game run of the Los Angeles Lakers. “Not ‘til we get to 32,” he said with a smile after one of the greatest challenges to Miami’s run of success. LeBron James hit the go-ahead jumper with 10.5 seconds remaining to cap a 37-point performance and the Heat escaped with a 105-103 win over the Boston Celtics on Monday night for their 23rd straight win, breaking a tie for …