[Enterprise Search] Fix Text Extraction toggle (elastic#173590)

## Summary


https://github.com/elastic/kibana/assets/1410658/a5980bd7-1290-442e-b2d3-c6a551325de7

Fix use text extraction toggle which removed itself before when toggled.

### Checklist

Delete any items that are not applicable to this PR.

- [ ] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

packages/kbn-search-connectors/components/configuration/connector_configuration_form.tsx

@@ -137,7 +137,9 @@ export const ConnectorConfigurationForm: React.FC<ConnectorConfigurationForm> =
               setConfigEntry={(key, value) => {
                 setConfigView({
                   ...configView,
-                  advancedConfigurations: { ...configView.advancedConfigurations, [key]: value },
+                  advancedConfigurations: configView.advancedConfigurations.map((config) =>
+                    config.key === key ? { ...config, value } : config
+                  ),
                 });
               }}
             />