fix(documents): Fix BulkResponseItem type casting in document-session

ts/domain/documents/document-session.ts

@@ -241,7 +241,7 @@ export class DocumentSession<T = unknown> {
 
         const action = Object.keys(item)[0];
         if (!action) continue;
-        const result = item[action as keyof typeof item] as Record<string, unknown> | undefined;
+        const result = item[action as keyof typeof item] as unknown as Record<string, unknown> | undefined;
 
         if (result?.error) {
           failed++;