Merge branch 'tailwind-purge-unused-css' into 'master'

Tailwind: Purge CSS-in-JS config

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/148436



Merged-by: Peter Hegman <phegman@gitlab.com>
Approved-by: Peter Hegman <phegman@gitlab.com>
Co-authored-by: Lukas Eipert <leipert@gitlab.com>
Co-authored-by: Paul Gascou-Vaillancourt <paul.gascvail@gmail.com>