Change Details

During {T421877} [we noticed](https://phabricator.wikimedia.org/T421877#11810168) that the queries executed in `PublicWikiController` as part of the `/wiki` endpoint weren't efficient. The current logic results in `N+2` queries being executed, where N is the total number of Wiki instances; at least with these query params `/wiki?sort=pages&direction=desc&page=1&per_page=10`. We should investigate if we can modify the logic to reduce the number of queries being executed to a fixed number regardless of the number of Wiki instances. Some related reading that might help: https://laravel-news.com/laravel-n1-query-problems