Code Refactor ruff check --fix --extend-select I

[glenn-jocher]

This Ultralytics PR refactors code to improve performance and readability. 🔄

Key changes include:

🚀 Optimized various functions for faster execution.
🧩 Simplified complex logic for better understanding and maintenance.
🗑️ Removed redundant code to streamline operations.
📚 Improved code structure and organization.

These changes aim to enhance the overall quality and efficiency of the code. 🌟

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Updated several Python scripts and GitHub workflow actions for better code readability and maintainability.

📊 Key Changes

• GitHub Actions: Simplified the merge-main-into-prs.yml workflow file for merging main branch into PRs.
• Training Scripts: Refactored lambda functions into proper function definitions in train.py for better clarity.
• YOLO Model Script: Refactored lambda functions to proper function definitions in yolo.py.
• Segment Training Script: Similar refactoring of lambda functions in segment/train.py.
• Tensorboard Logging: Converted lambda-based placeholder to a proper function in utils/loggers/__init__.py.
• Documentation: Adjusted markdown formatting in clearml/README.md.
• DataLoader Import: Modified import statements for better clarity in dataloaders.py.

🎯 Purpose & Impact

• Readability: The modifications improve the readability and maintainability of the code. ✅
• Clarity: Refactoring lambda functions into full function definitions helps in understanding the code. 🧠
• Consistency: Ensures consistent code style across the repository. 📏