Integration with Domain module

This current change would make the domain module a dependency of sitewide_alert, requiring anyone who wanted sitewide alerts to install the domain module.

I really like the idea of supporting the domain module but I want to help remove the direct dependency on the domain module and make the feature only available to those who need it.

One option might be able to remove this dependency by creating a submodule, `sitewide_alert_domain`, that would extend → /decorate the existing SitewideAlertManager class/service. Or in that submodule, would s ubscribe to an event → that we add/dispatch from the existing SitewideAlertManager.

I go this error in my logs and the sitewide_alerts block did not show up

TypeError: Drupal\sitewide_alert\SitewideAlertManager::__construct(): Argument #6 ($domainNegotiator) must be of type Drupal\domain\DomainNegotiatorInterface, null given, called in /drupal9.5.6/html/core/lib/Drupal/Component/DependencyInjection/Container.php on line 259 in Drupal\sitewide_alert\SitewideAlertManager->__construct() (line 87 of /drupal9.5.6/html/modules/contrib/sitewide_alert/src/SitewideAlertManager.php)

ChrisSnyder,

Thanks for your great suggestions on how to integrate properly with Domain module and sorry for taking so long to rewrite this.

I believe this is ready for review again.

Automatically closed - issue fixed for 2 weeks with no activity.