The racing world is mourning the loss of Claret Beret, the Grade 1-winning mare whose remarkable ascent through the ranks made her one of the sport’s most inspiring stories. According to Blood Horse, the 5-year-old daughter of Not This Time died Tuesday following a routine morning workout at Palm Meadows Training Center in Florida. Trainer Saffie Joseph Jr. confirmed the news, stating that Claret Beret suffered what appeared to be a cardiac-rela…