RAVENNA, Italy -- Conducor Riccardo Muti has once again reopened the Italian musical season in his adopted hometown of Ravenna after another — and if all goes well perhaps final — round of pandemic closures.With a purposeful nod and flick of his baton, the 79-year-old on Sunday ended what has been an unexpectedly long silence in Italian theaters, enrapturing a socially distanced and masked audience with the Vienna Philharmonic Orchestra’s first live performances since the fall — two evening