Adjust join token expiry for event dates

app/Models/Event.php

@@ -40,6 +40,14 @@ class Event extends Model
                 ],
             ]);
         });
+
+        static::updated(function (self $event): void {
+            if (! $event->wasChanged('date')) {
+                return;
+            }
+
+            app(EventJoinTokenService::class)->extendExpiryForEvent($event);
+        });
     }
 
     public function storageAssignments(): HasMany