[nuxt] Add `postcss-preset-env` by default to nuxt
enhancement🍰 p2-nice-to-have
# [nuxt] Add `postcss-preset-env` by default to nuxt
extractCSS removes Critical CSS in the latest Nuxt version (2.15.8)
pending triage2.x
missing css stylesheets in production build
3.xworkaround availablebug🔨 p3-minor