Fix flaky issue participants specs
What does this MR do and why?
Make sure other issues with a matching IID don't exist in the DB on specs that expect a 404 is using the issue's ID instead of IID. The problem was that sometimes the ID would match with another issue's IID and return a 200.
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
How to set up and validate locally
Failure is reproducible by running
bundle exec rspec spec/requests/api/issues/get_project_issues_spec.rb --seed 3228Related to #444827