Enable recursive query in BaseFolderImageProvider

Fixes album art not being extracted for multi-disc albums

CONTRIBUTORS.md

@@ -166,6 +166,7 @@
  - [RealGreenDragon](https://github.com/RealGreenDragon)
  - [ipitio](https://github.com/ipitio)
  - [TheTyrius](https://github.com/TheTyrius)
+ - [tallbl0nde](https://github.com/tallbl0nde)
 
 # Emby Contributors
 

Emby.Server.Implementations/Images/BaseFolderImageProvider.cs

@@ -31,6 +31,7 @@ namespace Emby.Server.Implementations.Images
             return _libraryManager.GetItemList(new InternalItemsQuery
             {
                 Parent = item,
+                Recursive = true,
                 DtoOptions = new DtoOptions(true),
                 ImageTypes = new ImageType[] { ImageType.Primary },
                 OrderBy = new (string, SortOrder)[]