When building a webform and saving elements the succes message is rendered behind the drupal sidebar

I've added a merge request that fixes the problem for me.

The message is rendered above the sidebar, it disappears after a few seconds so this behaviour is more desirable than an unreadable message.

Hi, I've verfied MR!642 on drupal 11.x version and it is working as expected

Testing Steps:
1. Install drupal 11.x version
2. Install webform 6.3.0-beta2 on my local
3. Created a form and added the elements and Save them
4. The success message was looking proper

Testing Result:

After applying patch the success message isn't hidding and it is looking proper after the element are saving so moving this to RTBC+1.Attaching sreenshot for reference.

Status - PASS

liam morland → made their first commit to this issue’s fork.

Thank you for picking this up this quick!