Charlie BreitroseA Watertown fires a puck at the net during the State Final against Sandwich at the TD Garden. BOSTON — The Watertown High School boys hockey team made all the right moves on the way to the TD Garden, and the Raiders looked like they might have one last magical moment to clinch the MIAA Div. 4 State Championship. In the second overtime, however, it was Sandwich that found the puck magic, prevailing 3-2. Coming inches short of the school’s second state championship is not bad for a team that basically didn’t exist five years ago.