* cleanup FEATURE_NEXTJS
* fixing some server tests
* updating article a for server tests
* update h2 to h4 map topic tests
* data off on TOCs
* updating dropdown article versions links
* Update so markdown renders in intros
* updating typo and all server tests are now passing
* remove nextjs feature flag
* head.js tests pass
* updating article-version-picker
* remove nextjs feature flag browser test
* update header.js tests
* fix page-titles.js test
* fix deprecated-enterprise versions
* adding early access
* testing
* getting childTocItem
* fixing table of contents to show child toc items
* updated to 2 because the sidebar article also has the same link
* remove comment
* updating pick
* Update TocLandingContext.tsx
* update package.json and change className to h4 for h2
* updating with mikes feedback
* remove a.active test
* React clean up: Delete unnecessary layouts/includes Part 2 (#20143)
* Delete unnecessary layouts
* setting back tests failing :(
* update layouts
* delete unnecessary includes
* remove github-ae-release-notes and updating layouts
* remove a.active test
