W&B: DDP fix

[AyushExel]

Fix: #5163

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhanced Weights & Biases (WandB) integration with safe import check.

📊 Key Changes

• Added a try-except block for importing the wandb library.
• Included an assertion to ensure that the imported wandb module is the official package, not a local directory with the same name.

🎯 Purpose & Impact

• Purpose: The changes prevent import errors by checking whether the wandb library is properly installed and is the correct version, thus mitigating potential conflicts or crashes.
• Impact: Users who rely on WandB for logging and experiment tracking will experience a more robust setup, reducing the risk of unexpected errors due to package issues. This contributes to a smoother workflow and easier debugging for developers utilizing the yolov5 integration with WandB.

[glenn-jocher]

@AyushExel thanks! Is this ready to merge?

[AyushExel]

@glenn-jocher yes

[glenn-jocher]

@AyushExel PR is merged. Thank you for your contributions to YOLOv5 🚀 and Vision AI ⭐