Fix webUI success / error messages (#7820)

* Fix export error handling

* Ensure that config editor success / error is updated each time

* Set response

* Formatting

web/src/routes/Config.jsx

@@ -28,10 +28,13 @@ export default function Config() {
       })
       .then((response) => {
         if (response.status === 200) {
+          setError('');
           setSuccess(response.data);
         }
       })
       .catch((error) => {
+        setSuccess('');
+        
         if (error.response) {
           setError(error.response.data.message);
         } else {

web/src/routes/Export.jsx

@@ -58,7 +58,7 @@ export default function Export() {
         }
       })
       .catch((error) => {
-        if (error.response) {
+        if (error.response?.data?.message) {
           setMessage({ text: `Failed to start export: ${error.response.data.message}`, error: true });
         } else {
           setMessage({ text: `Failed to start export: ${error.message}`, error: true });