Donald Trump’s last-minute filing Monday night states that the bond he’s offered up in his civil fraud case now has “substantial financial credibility” — but experts aren’t so sure. Trump’s $175 million bond, which would allow him to put seizures of his property on hold while he appeals the verdict that hit him with $454.2 million in damages earlier this year, was initially knocked by New York Attorney General Letitia James, who claimed its source — Knight Specialty Insurance Company — was not properly licensed in New York state. His team refiled before the deadline of midnight Monday, claimin…