TORONTO (AP) — During the emotionally wrecking final scene of “Hamnet,” Jessie Buckley and Paul Mescal had an issue. “There were moments where the camera was obstructing us,” Buckley recalls. “We were like: ‘No, we have to see each other. ’”“And then the minute we did see each other, it was like ‘Oh, no,’” Mescal says, laughing. “What a glorious thing. ”In “Hamnet,” Chloé Zhao’s adaptation of Maggie O’Farrell’s prizewinning 2020 novel, Mescal plays and...