Audit: Extracted SSCT related auditing code to formatter node (#25443)

* Removed unneeded header tracking in log request/log response of audit broker, moved SSCT overwrite to entry formatter

* added changelog

audit/entry_formatter.go

@@ -107,6 +107,13 @@ func (f *EntryFormatter) Process(ctx context.Context, e *eventlogger.Event) (*ev
 		data.Request.Headers = adjustedHeaders
 	}
 
+	// If the request contains a Server-Side Consistency Token (SSCT), and we
+	// have an auth response, overwrite the existing client token with the SSCT,
+	// so that the SSCT appears in the audit log for this entry.
+	if data.Request != nil && data.Request.InboundSSCToken != "" && data.Auth != nil {
+		data.Auth.ClientToken = data.Request.InboundSSCToken
+	}
+
 	var result []byte
 
 	switch a.Subtype {