MediaWiki no longer uses the codex-search files; instead it uses code splitting for its @wikimedia/codex-search and codex-search-styles modules.
We can now remove the codex-search build.
- Update the Codex build process to stop building the codex-search.js, codex-search.cjs and codex-search.*.css files
- Update foreign-resources.yaml in MediaWiki to stop pulling in these files from the Codex package