Fix workaround for #17491 log error on failed response for mail sending

* Part of bunch of fixes, this fix #17491 where admins at test install cannot see the log of errors for UI test mail button, we can just see that this is the correct form cos other parts of the code manage the exception inside the catch using log interface class

app/Http/Controllers/Api/SettingsController.php

@@ -150,8 +150,11 @@ class SettingsController extends Controller
         if (!config('app.lock_passwords')) {
             try {
                 Notification::send(Setting::first(), new MailTest());
+                Log::debug('Mail sending to '.config('mail.reply_to.address'));
                 return response()->json(['message' => 'Mail sent to '.config('mail.reply_to.address')], 200);
             } catch (\Exception $e) {
+                Log::debug($e);
+                Log::error('Mail sent to '.config('mail.reply_to.address') . $e->getMessage());
                 return response()->json(['message' => $e->getMessage()], 500);
             }
         }
@@ -315,4 +318,4 @@ class SettingsController extends Controller
     }
 
 
-}
+}