Former President Donald Trump claimed victory in Tuesday night’s presidential debate against Vice President Kamala Harris when confronted by reporters — but then he repeatedly went back and forth on whether he was open to having another one. Trump made the remarks while visiting Shanksville, Pennsylvania, the location where the fourth plane on the September 11 terrorist attacks crashed after passengers overpowered the hijackers. “We’re looking at it, but, you know, when you win, you don’t necessarily have to do it a second time,” said Trump. “We had a — I thought we had a great debate last nig…