Fix missing graphql field for CE

What does this MR do and why?

Fixes issue where a EE only field was being used in a CE query (causing errors to be thrown to the user).

References

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MR acceptance checklist

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Screenshots or screen recordings

EE

How to set up and validate locally

1. Simulate CE
2. Visit a MR with a failed job
3. Ensure missing field error does not show
4. Simulate EE
5. Ensure troubleshoot button is there when AI is setup on GDK

Related to #520054 (closed)