What Long Island sees, reads and even roots for has a lot to do with James Dolan. Thank goodness he got lucky with the New York Knickerbockers this NBA season because the outlook didn’t look too promising at first, when the team’s chances rested solely in Carmelo Anthony’s hands. But suddenly along came “Linsanity,” and for a couple of weeks everybody on LI was a Knicks fan again. Then the Rangers heated up the ice, and that was a thrilling NHL playoff run, the first one in years. Still, we’re left to wonder what News12 and Newsday would be like if they could give Dolan and Cablevision the coverage both he and it deserve.