Use actual tailwind css source for lint / build

What does this MR do and why?

Use actual tailwind css source for lint / build

We currently use just @tailwind utilities which misses a few components, and some definitions we have created in app/assets/stylesheets/tailwind.css.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

N/A

How to set up and validate locally

1. yarn run tailwindcss:build should work
2. rm -rf app/assets/builds/tailwind.css config/helpers/tailwind/all_utilities.haml config/helpers/tailwind/css_in_js.js && yarn run lint:tailwind-utils as well.