When the history books on 2020s music get written, the enterprising poptimists in charge will no doubt include Sabrina Carpenter, who’s gone from “Tate McRae is the ceiling” to “world-dominating pop star” seemingly overnight. But they’d be remiss if they named “Espresso” as the song that chartered her course. While this summer’s breakout hit — along with its twee, chart-topping follow-up, “Please Please Please” — made the singer a household name...