Amid the quiet of Gaza’s white sand dunes that cover the grounds of Israeli settlements evacuated more than a decade ago, Palestinian actors playing ultra-orthodox Israelis get in a fight. They are shooting the dramatic series “Heaven’s Gate” on the Hamas-owned Al Aqsa TV network, which will premiere this summer during Ramadan. The show is filming in Gaza, but the show is set in Jerusalem, and the city has been recreated inside of the besieged strip. This is as close to visiting the holy city as any of the actors have come.