All configuration of Ban message

Here is my solution to provide this feature.

Will need test coverage if this lands. But can ask the "why" the need to change it?

Hi,
I have a request from a client to make the message not quite so direct.
Regards Rory

So ban actually doesn't have a submaintainer so will elevate to framework manager.

I think this probably belongs in https://www.drupal.org/project/advban → for the following reasons

* We don't have a ban maintainer
* The module is in the hotpath and needs to be as performant as possible

I think it would be simple and performant to make it configurable via settings.php

But config and UI feels too like overkill when anything more advanced is in the contib module

There's string overrides specifically for that https://git.drupalcode.org/project/drupal/-/blob/10.2.x/sites/default/de...

String overrides won't help on this one, because the core ban message isn't translated. AdvBan did the trick though.