Move more issues query specs to shared example

What does this MR do and why?

Refactor more specs into a shared example. We are introducing a new issues query at the root level of the GraphQL API. By using this shared example we are adding the same coverage we had at the project level for the root level query. This is the second MR in a series of MRs to fully refactor those request specs. Splitting into multiple MRs to keep them smaller

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.

Related to #377514 (closed)