Word slipped down the real estate gossip grapevine via the always deliciously loose-lipped Yolanda Yakketyyak that Jenni Konner, twice Emmy nominated co-creator, writer and producer of the provocative HBO hit series “Girls,” made a surreptitious, $4.9 million off-market deal for a celeb-pedigreed traditional residence in L.A.’s historic and historically prosperous Windsor Square neighborhood.