Update issue_metrics.py

Co-authored-by: JM (Jason Meridth) <[email protected]>
Signed-off-by: Chris McIntosh <[email protected]>

Author: Chocrates

issue_metrics.py

@@ -163,7 +163,8 @@ def get_per_issue_metrics(
                 num_issues_open += 1
             if env_vars.hide_created_at is False:
                 issue_with_metrics.created_at = issue.created_at
-
+if not env_vars.hide_created_at:
+   issue_with_metrics.created_at = issue["createdAt"]
         issues_with_metrics.append(issue_with_metrics)
 
     return issues_with_metrics, num_issues_open, num_issues_closed