Which young tennis star became one of the youngest Grand Slam champions of the modern era?

Explanation: The original question refers to the 2026 French Open women's singles title, but I cannot reliably verify that result. A safer and well-established fact is that Coco Gauff became one of the youngest Grand Slam champions of the modern era when she won the 2023 US Open. She is widely recognized for her exceptional talent, athleticism, and success at a young age on the professional tennis circuit.