The breakup between Evelyn Ha and Ben Pasternak is the subject of an all-out online information war. Photographs via TikTok; YouTube; BI An influencer and a tech entrepreneur had a violent, and now very online, breakup. Prosecutors say startup prodigy Ben Pasternak assaulted social media star Evelyn Ha. Ha's TikTok has 4.5 million followers — but her most important video may only ever play in court. Tech entrepreneur Ben Pasternak did not want to be served. His trouble wasn't the room service. There at his suite in the Baccarat Hotel, the "service de chambre" included round-the-clock Cristal and caviar. No, the Forbes "30 Under 30 " startup wunderkind was hiding out at the Manhattan hotel in hopes of dodging the hand-delivery of a 41-page lawsuit accusing his crypto venture of fraud. And there at the Baccarat, where suites start at $1,500 or more a night, things were about to go from bad to violent.…