[Docs] Fix langchain import error genai 03

[daniels290813]

📝 Description

Fixing the langchain import error wrapped it with try and except to enable support for all versions

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🛠️ Changes Made

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✅ Checklist

• [X] I updated the documentation (if applicable)
• [X] I have tested the changes in this PR
• [X] I confirmed whether my changes are covered by system tests
  • [ ] If yes, I ran all relevant system tests and ensured they passed before submitting this PR
  • [ ] I updated existing system tests and/or added new ones if needed to cover my changes
• [ ] If I introduced a deprecation:
  • [ ] I followed the Deprecation Guidelines
  • [ ] I updated the relevant Jira ticket for documentation

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🧪 Testing

Tested manually using a new env

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🔗 References

• Ticket link: https://iguazio.atlassian.net/browse/ML-11367
• Design docs links:
• External links:

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🚨 Breaking Changes?

• [ ] Yes (explain below)
• [X] No

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🔍️ Additional Notes

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