Former president Donald Trump enjoyed a front-row seat at the high school graduation for his youngest son, Barron, on Friday during a break from the embattled GOP frontrunner’s criminal trial in New York City. Trump, clad in a dark suit, white shirt and blue tie, was seen alongside Melania as the couple proudly watched Barron celebrate the milestone alongside his fellow Class of 2024 pupils at the private Oxbridge Academy in Florida, RadarOnline.com has learned. Melania opted for a navy blazer, a white skirt, and a straw boater hat for the momentous occasion which her father, Viktor Knavs, als…