President Pedro Sanchez of Spain speaks to reporters after visiting the White House in Washington on May 12, 2023. To leftists abroad, Sánchez is a hero for standing up to Donald Trump. His domestic critics say Sanchez is actually helped by Trump, who offers distractions from his own scandals and setbacks. (Kenny Holston/The New York Times) By JASON HOROWITZ When Pope Leo XIV met in Madrid with Spain’s left-wing prime minister, Pedro Sánchez, on Monday morning, they represented, at least to…