For all his bluster, former President Donald Trump is genuinely terrified of spending a night in jail for contempt of court because of his germophobia, his ex-aide Sarah Matthews told CNN’s Jim Acosta on Wednesday. This comes after Judge Juan Merchan has repeatedly warned the former president he is risking imprisonment if he continues to violate the gag order in the Manhattan criminal hush money case by publicly attacking witnesses and jurors — and Trump appears to have noticed this, deleting a post on Truth Social Tuesday complaining about the trial after he learned adult film star Stormy Dan…