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The star of Sunday night’ s 2022 Super Bowl halftime show at SoFi Stadium in Inglewood, California, wasn’ t the talent, including veteran superstar rappers Eminem, Dr. Dre, Snoop Dogg and Kendrick Lamar and R&B singer Mary J. Blige. It was the stage— an all-white, modular, two-level complex designed to capture the stretch of Los Angeles where Dre and Kendrick grew up in...