No, he did not. He even showed up at the trial, where he got attacked fo rit by the likes of Laura Lunatic.
I grew up in and worked in politics as a volunteer and professionally for many years. I do not trust the reporting as to Trump’s endorsement of an opponent of Good. I am certain that there is something that was not revealed in the major news coverage. As the old saying goes, those who talk do not know, and those who know do not talk.