He downplayed. He denied. He dismissed. President Joe Biden’s first television interview since his poor debate performance last week was billed as a prime-time opportunity to reassure the American people that he still has what it takes to run for, win and hold the nation’s highest office. But Biden, with more than a hint of hoarseness in his voice, spent much of the 22 minutes resisting a range of questions that George Stephanopoulos of ABC News had posed — about his competence, about taking a cognitive test, about his standing…