Code cleanup and phpstan fixes. Still breaks but at least it's consistent.

app/Models/InvitedUser.php

@@ -42,7 +42,7 @@ use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
  * @property int|string         $id
  * @property Carbon|null $created_at
  * @property Carbon|null $updated_at
- * @property int         $user_id
+ * @property int|string         $user_id
  * @property string      $email
  * @property string      $invite_code
  * @property Carbon      $expires