Show wiki sidebar on a 404 page
What does this MR do and why?
Show wiki sidebar on a 404 page
Changelog: changed
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How to set up and validate locally
- Set a project's visibility to public.
- Create a few wiki pages in the project's wiki.
- Delete the home page.
- Visit the home page in a new private tab.
- The page should 404, but the sidebar should still be visible, allowing you to navigate to a different page.
Related to #22319 (closed)