The Trump helicopter saga continued late Friday after a California politician came forward and said it was he — not former San Francisco Mayor Willie Brown — who was actually in a helicopter with former President Donald Trump that nearly went down in 1990. Trump shared a harrowing tale at his news conference Thursday in Mar-a-Lago that he nearly died in a helicopter crash with Brown, who was also a former boyfriend of Democratic presidential candidate Kamala Harris. “We were in a helicopter, going to a certain location together, and there was an emergency landing. This was not a pleasant landi…