Fix: extended_metrics raises clear ValueError when IoU=0.50 absent from iouThrs#75

MiXaiLL76 merged 2 commits intomainMiXaiLL76/faster_coco_eval:mainfrom

copilot/fix-extended-metrics-valueerrorMiXaiLL76/faster_coco_eval:copilot/fix-extended-metrics-valueerrorCopy head branch name to clipboard