Backport pull request #13411 from jellyfin/release-10.10.z

Use WriteThrough for ImageSaver

Original-merge: 6329de4fc390d356e8c09d801357258b941cfd2d

Merged-by: joshuaboniface <joshua@boniface.me>

Backported-by: Bond_009 <bond.009@outlook.com>

MediaBrowser.Providers/Manager/ImageSaver.cs

@@ -291,6 +291,7 @@ namespace MediaBrowser.Providers.Manager
 
                 var fileStreamOptions = AsyncFile.WriteOptions;
                 fileStreamOptions.Mode = FileMode.Create;
+                fileStreamOptions.Options = FileOptions.WriteThrough;
                 if (source.CanSeek)
                 {
                     fileStreamOptions.PreallocationSize = source.Length;