feat(cna): remove `autoprefixer` from default templates (#55725)
### What?
Removing `autoprefixer` from the default Tailwind CSS templates. (It can
be installed afterward)
### Why?
After some investigation by @timneutkens, `autoprefixer` seems to
introduce some compilation overhead
### How?
Removing `autoprefixer` from the auto-installed dependency list, it
would be up to the developer to install this plugin if they need it.
[Slack
thread](https://vercel.slack.com/archives/C04DUD7EB1B/p1695288906722539)