A Hoboken cannabis dispensary mired in controversy for nearly two years has opened its doors as the city’s first recreational use-only store, despite a looming lawsuit ruling that could force its owners to close the shop. Blue Violets, located on Sixth and Washington streets, launched a surprise soft opening Saturday, April 20, the unofficial weed holiday. It’s the second legal cannabis business to open in the city. The store has attracted “not in my backyard” opposition from critics who say it’s too close to two nearby schools — Hoboken Charter School and All Saints Episcopal Day School. It l…