Update unsubscribe.blade.php

Add an extra check to see if the user has a UUID, because if the email was never sent, they won't have one (no subscription has been created).

Author: eugenefvdm

resources/views/components/unsubscribe.blade.php

@@ -1,5 +1,7 @@
 @props(['subscription'])
 
+@if($subscription?->uuid)
 <div style="text-align: center; margin: 1em 0; font-size: 0.9em;">
     <a href="{{ route('notifications.unsubscribe', ['uuid' => $subscription->uuid]) }}">Unsubscribe</a>
-</div>
+</div>
+@endif