Create helper for data generation
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=250622) </details> <!--IssueSummary end--> Changes will need to be applied to `assignee` and `reviewer` --- The following discussion from !40424 should be addressed: - [ ] @wortschi started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/40424#note_412886661): (+3 comments) > I wonder if it would be better to move this `data` generation into a helper :thinking: . But maybe ~backend has a strong opinion about this?
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