[ML] Trained models - fix download state responsiveness (elastic#191900)

## Summary

Fix for [elastic#1284](elastic/ml-team#1284)


https://github.com/user-attachments/assets/3b829777-4ff9-4272-80dd-d27bccdb9fb5



### Checklist

Delete any items that are not applicable to this PR.

- [X] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))

x-pack/plugins/ml/public/application/model_management/models_list.tsx

@@ -707,7 +707,7 @@ export const ModelsList: FC<Props> = ({
         );
 
         return (
-          <EuiFlexGroup direction={'column'} gutterSize={'none'}>
+          <EuiFlexGroup direction={'column'} gutterSize={'none'} css={{ width: '100%' }}>
             {isDownloadInProgress ? (
               <EuiFlexItem>
                 <EuiProgress