fix(email): Emails are not sent in multiple cases

- fix(email): transactional emails are all not sent if `Use system wide (transactional) email settings` is disabled and no other email provide is setup on the Notifications page
- fix(email): no emails are sent if SMTP username and SMTP password are empty (which is the case in dev for example)
- fix(email): Wrong test email notification is used, causing the transactional email test notification to fail if no email provider is set up on the Notifications page.

app/Notifications/TransactionalEmails/ResetPassword.php

@@ -17,10 +17,11 @@ class ResetPassword extends Notification
 
     public InstanceSettings $settings;
 
-    public function __construct($token)
+    public function __construct($token, public bool $isTransactionalEmail)
     {
         $this->settings = instanceSettings();
         $this->token = $token;
+        $this->isTransactionalEmail = true;
     }
 
     public static function createUrlUsing($callback)