Former President Donald Trump’s Supreme Court immunity Hail Mary could blow up in his face and — force him to be tried before Election Day. That’s the read by conservative attorney and Trump critic George Conway, who appeared Friday night on CNN’s “The Source with Kaitlan Collins.” “When the case first went up to the [D.C.] Court of Appeals there were 81 days before trial,” Conway said. “And the Court has said, basically the District Court said that it’s going to keep that 81 day schedule; and if you add 81 days to the end of June — you basically you’re in the heat the middle of the fall campa…