Merged PR 56475: Fix incorrect publisher topic for subscriptions on c…

…ontact reset

## What's being changed

We have corrected a publisher topic for contact subscriptions.

## Why it's being changed

When the cron for order clean-up runs, the `resetContact` was publishing a subscription message to an invalid queue.

## How to review / test this change

- Ensure you have DB consumers configured.
- Trigger the `sales_order_save_after` event.
- Observe no error in the message queue report.

Related work items: #263931

Observer/Sales/OrderSaveAfter.php

@@ -281,7 +281,7 @@ private function resetContact($contact)
             $subscriptionData->setId($contact->getId());
             $subscriptionData->setEmail($contact->getEmail());
             $subscriptionData->setWebsiteId($contact->getWebsiteId());
-            $this->publisher->publish('ddg.newsletter.subscribe', $subscriptionData);
+            $this->publisher->publish('ddg.newsletter.subscription', $subscriptionData);
         }
     }