fix: add missing content-disposition from CORS handler (#10137)

cmd/handler-utils.go

@@ -413,6 +413,9 @@ func extractAPIVersion(r *http.Request) string {
 
 // If none of the http routes match respond with appropriate errors
 func errorResponseHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method == http.MethodOptions {
+		return
+	}
 	version := extractAPIVersion(r)
 	switch {
 	case strings.HasPrefix(r.URL.Path, peerRESTPrefix):