fix(chart): make chart error banners non-dismissible (#38014)

superset-frontend/src/components/ErrorMessage/FrontendNetworkErrorMessage.tsx

@@ -25,11 +25,13 @@ export function FrontendNetworkErrorMessage({
   error,
   subtitle,
   compact,
+  closable,
 }: ErrorMessageComponentProps) {
   const { level, message } = error;
   return (
     <ErrorAlert
       compact={compact}
+      closable={closable}
       errorType={t('Network Error')}
       message={message}
       type={level}