Feature: Handling Cases for User to Customer Relationships

This commit handles a case where customer data are "dead-data" menaing there is no way of erasure for them, which makes the app non-compliant

src/Privacy/Events/UserErasureRequested.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Modules\Core\Privacy\Events;
+
+use Modules\Core\Privacy\Models\DataErasureRequest;
+
+/**
+ * Fired by PrivacyService::requestErasureForUser() right after the grace-period
+ * request is created (not at completeErasure() time — see
+ * Modules\Core\Privacy\Listeners\CascadeCustomerErasureListener, which needs to
+ * act while the User is still linked to their Customers, before any detach has
+ * happened).
+ */
+class UserErasureRequested
+{
+    public function __construct(
+        public readonly DataErasureRequest $request,
+    ) {}
+}