A Tesla software update is adding the ability to connect Bluetooth headphones so kids in the back seat can enjoy streaming movies and shows without disturbing their parents in the front. As Not a Tesla App notes, so far, the 2023.38.8 software update with the new feature for content viewed from Tesla’s Theater app is rolling out only for the redesigned Model 3 that offers an infotainment screen for back seat passengers. The new vehicle launched in Europe in September but has not yet…