Update the "remove fork relationship" confirmation
<!--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=225233) </details> <!--IssueSummary end--> ### Problem to solve The "remove project" confirmation is being updated under https://gitlab.com/gitlab-org/gitlab/-/issues/220243 and https://gitlab.com/gitlab-org/gitlab/-/issues/24401. The "remove fork relationship" confirmation is similar and should be updated to match. ### Further details - This was inspired by https://gitlab.com/gitlab-org/gitlab/-/issues/24401#note_368232245 - Example of the existing/deprecated design: <details> <summary>Example</summary> ![Screen_Shot_2020-06-29_at_12.53.49_PM](/uploads/f1705f79aba9588c4da13388a103772a/Screen_Shot_2020-06-29_at_12.53.49_PM.png) </details> ### Proposal The "remove fork relationship" confirmation looks similar to the [new "remove project" confirmation](https://gitlab.com/gitlab-org/gitlab/-/issues/220243), and similarly [confirms the namespace](https://gitlab.com/gitlab-org/gitlab/-/issues/24401).
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