Avid Upper West Side jogger was run down from behind by an e-bike rider going the wrong way in Central Park — is now in a medically induced coma, according to her family and a witness. The “vibrant” 43-year-old runner, identified by her first name, Jean, had to have a portion of her skull removed during emergency cranial surgery following the harrowing July 7 crash, her niece, Brandi Wiltse, told The Post on Thursday. “Now, over a week from the incident, she is still not awake, still in a medically induced coma,” Wiltse said. But the electric bike driver involved...