Make sure its still written

Author: Nagkumar Arkalgud

sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/red_team/_red_team.py

@@ -476,7 +476,7 @@ async def _log_redteam_results_to_mlflow(
                 with open(os.path.join(tmpdir, artifact_name), "w", encoding=DefaultOpenEncoding.WRITE) as f:
                     if _skip_evals:
                         f.write(json.dumps({"conversations": redteam_result.attack_details or []}))
-
+                    elif redteam_result.scan_result:
                         json.dump(redteam_result.scan_result, f)
 
                 # Copy all relevant files to the temp directory