Update utils.py - add all keys in check_det_dataset()

[MatD3mons]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improvement in dataset path settings to support more flexibility in configurations.

📊 Key Changes

• Refactoring dataset paths setup: The loop iterating over dataset keys ("train", "val", "test", "minival") has been refactored to dynamically consider all keys in the dataset's dictionary except for certain specified keys ("nc", "yaml_file", "names", "path").

🎯 Purpose & Impact

• Enhanced Flexibility: This change allows dataset configurations to be more flexible and not limited to predefined keys. It automatically adapts to any keys present in the dataset's configuration, making it easier to manage and extend datasets with custom splits or additional metadata.
• Potential User Impact: Users dealing with custom datasets no longer need to conform strictly to a predetermined set of keys for their dataset splits. This could simplify the process of integrating diverse datasets and may reduce errors related to dataset configuration compliance.

🚀 This update is a step towards making the functionality more robust and user-friendly, particularly for those working with diverse or unconventional datasets.

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[MatD3mons]

I have read the CLA Document and I sign the CLA