Implement Seven pagers as designed

I asked for help in #frontend to move Seven and Classy issues from the core component to the correct place, since Seven and Classy have been removed from core. markconroy responded saying this issue should move to the Seven project in contrib. They were not able to do that because the meta data was not visible (don't know why). So, I am moving this issue. markconroy already has credit on the Seven triage meta issue so there is no need to add credit. 📌 [Meta] Seven issue triage Fixed

On Drupal 11, themes show a minimal pager, which just shows the current page and arrows.

I take the development took a different direction.