`ee/spec/controllers/ee/projects/jobs_controller_spec.rb` appears to be
flaky due to some intermittent issue with handling a `GRPC::NotFound`
exception in a streaming response. Even the debugger has difficult
following the flow:
https://github.com/deivid-rodriguez/byebug/issues/725

The controller is attempting to lookup the ref of the pipeline
commit. In the common case, repository would be there, and rendering a
pipeline from a missing repository isn't normal. We work around the
issue by just making sure the projects in the test have repositories.

Potential fix for https://gitlab.com/gitlab-org/gitlab/-/issues/227845