Fixup! Notifications - When a notification is dispatched to many user…

…s, ensure that if one of them acknowledges it, the notification is removed for all users.

routes/web.php

@@ -401,6 +401,7 @@
 
 Route::get('/notifications/{notification}/dismiss', function (\Illuminate\Notifications\DatabaseNotification $notification, \Illuminate\Http\Request $request) {
     \Illuminate\Notifications\DatabaseNotification::query()
+        ->whereNull('read_at')
         ->whereJsonContains('data->group', $notification->data['group'])
         ->get()
         ->each(fn($notif) => $notif->markAsRead());