“The Boys” is known for chest-bursting tentacles, shape-shifters who bed your boyfriend and merciless satire of capitalist excess and corporate-controlled media. But last year, Season 4 of the Prime Video series set its sights on a new target in its evolution from comic-book adaptation to hot-button must-see: politics. Set during a presidential election cycle that eerily reflected the one going on in the real world, the show’s metaphorical relevance soared to an all-time high.