Display related merge request details in expanded workspace list card
# Display related merge request details in expanded workspace list card MR: Pending <!-- NOTE: For context on MR heading, see: https://handbook.gitlab.com/handbook/engineering/devops/dev/create/remote-development/index.html#relationship-of-issues-to-mrs --> ## Description As part of our [new designs for Workspaces](https://gitlab.com/groups/gitlab-org/-/epics/18674), we need to display related merge request information in the expanded workspace cards so that users can quickly view and access merge requests associated with their workspace branch using the new `relatedMergeRequests` field from the Workspace GraphQL type created in https://gitlab.com/gitlab-org/gitlab/-/issues/565012+s. ## Visual Changes ![image](/uploads/09bab387c893aa98d636d132c4c366ff/image.png){width=861 height=324} ## Acceptance criteria - [ ] Add "Merge request" section to expanded workspace cards following the design pattern - [ ] Display merge request link in format "GitLab.org/project-name/!1234" with external link icon - [ ] External link opens the MR in a new tab with proper security attributes (rel="noopener noreferrer") - [ ] Handle cases with no related merge requests (hide section) ## TODO: Implementation plan <!-- NOTE: Feel free to expand with more sections and headers as needed --> <!-- DO NOT TOUCH BELOW -->
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