* MM-27007 Add migration of favorited channels to CreateInitialSidebarCategories * MM-27007 Rewrite migrateFavortitesToSidebarT to use ROW_NUMBER() when available * MM-27007 Remove automatic sidebar migration * Remove old i18n strings * Fix typo * Address feedback Co-authored-by: Mattermod <mattermod@users.noreply.github.com>