Merge pull request #5672 from jellyfin/skip-bad-images

ensure only valid images are saved in ItemImageProvider

(cherry picked from commit 38913a42b4397d39c6a110f40c2a3569a55bb650)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>

MediaBrowser.Providers/Manager/ItemImageProvider.cs

@@ -469,6 +469,7 @@ namespace MediaBrowser.Providers.Manager
                 try
                 {
                     using var response = await provider.GetImageResponse(url, cancellationToken).ConfigureAwait(false);
+                    response.EnsureSuccessStatusCode();
                     await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
 
                     await _providerManager.SaveImage(