RTE and media picker should route medias the same way in the Delivery API (#16550)

* RTE and media picker should route medias the same way in the Delivery API

* Fix failing unit test

* Fixed failing tests

src/Umbraco.Core/DeliveryApi/ApiMediaUrlProvider.cs

@@ -17,6 +17,6 @@ public sealed class ApiMediaUrlProvider : IApiMediaUrlProvider
             throw new ArgumentException("Media URLs can only be generated from Media items.", nameof(media));
         }
 
-        return _publishedUrlProvider.GetMediaUrl(media, UrlMode.Relative);
+        return _publishedUrlProvider.GetMediaUrl(media);
     }
 }