complete story 8.2 with qa tests

app/Notifications/WelcomeAccountNotification.php

@@ -2,9 +2,11 @@
 
 namespace App\Notifications;
 
+use App\Mail\WelcomeEmail;
+use App\Models\User;
 use Illuminate\Bus\Queueable;
 use Illuminate\Contracts\Queue\ShouldQueue;
-use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Mail\Mailable;
 use Illuminate\Notifications\Notification;
 
 class WelcomeAccountNotification extends Notification implements ShouldQueue
@@ -29,17 +31,11 @@ class WelcomeAccountNotification extends Notification implements ShouldQueue
     /**
      * Get the mail representation of the notification.
      */
-    public function toMail(object $notifiable): MailMessage
+    public function toMail(object $notifiable): Mailable
     {
-        $locale = $notifiable->preferred_language ?? 'ar';
-
-        return (new MailMessage)
-            ->subject(__('emails.welcome_subject', [], $locale))
-            ->view('emails.welcome', [
-                'user' => $notifiable,
-                'password' => $this->password,
-                'locale' => $locale,
-            ]);
+        /** @var User $notifiable */
+        return (new WelcomeEmail($notifiable, $this->password))
+            ->to($notifiable->email);
     }
 
     /**