Rename IssuesResolver to ProjectIssuesResolver
What does this MR do and why?
Follow up on !102655 (comment 1157458603)
We are introducing a new issues
query at the root level of the GraphQL API. We are renaming the existing resolver to denote it is used at the project level.
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
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I have evaluated the MR acceptance checklist for this MR.
Related to #381303 (closed)