Universal’s “Downton Abbey: The Grand Finale” debuted at No. 1 in the U.K. and Ireland, earning £4.3 million ($5.8 million), according to Comscore. Sony’s “Demon Slayer: Kimetsu No Yaiba Infinity Castle” followed in second place with $4.6 million. Warner Bros.’ “The Conjuring: Last Rites” continued to perform solidly in its second week, adding $3.8 million […]