fix: ImportSampleData fails in direct .zip mode (#2980)

Co-authored-by: Artem Dudarev <artem@virtoworks.com>

Author: alexeyshibanov

src/VirtoCommerce.Platform.Web/Controllers/Api/PlatformExportImportController.cs

@@ -179,7 +179,11 @@ private async Task<IList<SampleDataInfo>> InnerDiscoverSampleDataAsync()
             {
                 return new List<SampleDataInfo>
                 {
-                    new() { Url = sampleDataUrl }
+                    new()
+                    {
+                        Name = Path.GetFileNameWithoutExtension(sampleDataUrl),
+                        Url = sampleDataUrl,
+                    },
                 };
             }