fix head decap not working for invalid avatars

[HexaField]

Summary

🤖 Generated by Copilot at 00ade88

Refactored the useEffect hook in AvatarHeadDecapComponent to prevent errors and improve readability. Added checks for the head node and the headDecap value before scaling the head node.

References

closes #insert number here

Explanation

🤖 Generated by Copilot at 00ade88

• Refactored the useEffect hook in the AvatarHeadDecapComponent to prevent errors or side effects when the head node or the headDecap value is missing (link)

🤖 Generated by Copilot at 00ade88

useEffect hook
refines head decap logic
snowflakes fall gently

QA Steps

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Checklist

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• Changes have been manually QA'd
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