Ensure that Ban does not get special core treatment

Problem/Motivation

Ban is being moved from core to contrib and it should use drupal/ban

See the parent issue for links to the policy issues.

Steps to reproduce

Proposed resolution

Change the composer facade so that the contrib project, Ban, uses drupal/ban instead of drupal/ban-ban.

Remaining tasks

Postponed on Drupal 11.3

User interface changes

API changes

Data model changes