NEW YORK — FTX founder Sam Bankman-Fried’s spectacular rise and fall in the cryptocurrency industry — a journey that included his testimony before Congress, a Super Bowl advertisement and dreams of a future run for president — hit rock bottom Thursday when a New York jury convicted the son of Stanford law professors of fraud for stealing at least $10 billion from customers and investors.After the monthlong trial, jurors rejected Bankman-Fried’s claim during testimony in Manhattan federal court …