Backport pull request #13601 from jellyfin/release-10.10.z

Delete children from cache on parent delete

Original-merge: 767a5e6193

Merged-by: Bond-009 <bond.009@outlook.com>

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

Emby.Server.Implementations/Library/LibraryManager.cs

@@ -457,6 +457,7 @@ namespace Emby.Server.Implementations.Library
             foreach (var child in children)
             {
                 _itemRepository.DeleteItem(child.Id);
+                _cache.TryRemove(child.Id, out _);
             }
 
             _cache.TryRemove(item.Id, out _);