<!--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> - [Work on this issue](https://contributors.gitlab.com/manage-issue?action=work&projectId=278964&issueIid=560187) - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=560187) </details> <!--IssueSummary end--> ### Issue Now that work items have a sidebar on the `Create` screen, we should do the same with merge requests. Proof of concept MR --> https://gitlab.com/gitlab-org/gitlab/-/merge_requests/197830+ | Create work item | Create merge request | | ------ | ------ | |  |  |