The escalating war between ABC and CBS over their respective fame-seeking-narcissists-live-in-totally-wired-house series now threatens to consume both networks’ date-to-mate reality series. In the latest development, CBS has been compelled to move the unveiling of its new reality dating series, “3,” to July 29 — after learning of ABC’s plan to attack “3’s” originally scheduled July 22 launch by moving its season finale of “The Bachelorette” to that same Sunday night.