Backport pull request #8611 from jellyfin/release-10.8.z

Fix TranscodeReasons type in OpenAPI output

Original-merge: c86d5838be

Merged-by: Claus Vium <cvium@users.noreply.github.com>

Backported-by: Joshua M. Boniface <joshua@boniface.me>

Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs

@@ -434,11 +434,15 @@ namespace Jellyfin.Server.Extensions
             options.MapType<TranscodeReason>(() =>
                 new OpenApiSchema
                 {
-                    Type = "string",
-                    Enum = Enum.GetNames<TranscodeReason>()
-                        .Select(e => new OpenApiString(e))
-                        .Cast<IOpenApiAny>()
-                        .ToArray()
+                    Type = "array",
+                    Items = new OpenApiSchema
+                    {
+                        Reference = new OpenApiReference
+                        {
+                            Id = nameof(TranscodeReason),
+                            Type = ReferenceType.Schema,
+                        }
+                    }
                 });
 
             // Swashbuckle doesn't use JsonOptions to describe responses, so we need to manually describe it.