Form errors for Layout Builder block forms should scroll viewport to top

I'm wondering how I can provide a patch here, and any guidance would be appreciated.

Should we get a ScrollTopCommand into Core (9.x)? I've seen this issue https://www.drupal.org/project/drupal/issues/3300481 ✨ Move ScrollTopCommand views Ajax command to the Drupal Core Fixed that might help with this part.

After getting a ScrollTopCommand in Core, is updating the AjaxFormHelperTrait::ajaxSubmit the correct solution for this issue?

Providing a patch to fix the scrollTop with Ajax submission in Layout Builder. The patch attached is for 9.5.x.

The approach is to override the AjaxFormHelperTrait::ajaxSubmit in ConfigureBlockFormBase, calling a custom/new Ajax command called LayoutBuilderScrollTopCommand responsible for scrolling the LB canvas to top.

Before:

After:
layout

Updating status to Needs Review.

The Needs Review Queue Bot → tested this issue. It no longer applies to Drupal core. Therefore, this issue status is now "Needs work".

Apart from a re-roll or rebase, this issue may need more work to address feedback in the issue or MR comments. To progress an issue, incorporate this feedback as part of the process of updating the issue. This helps other contributors to know what is outstanding.

Consult the Drupal Contributor Guide → to find step-by-step guides for working with issues.

Patch for 10.1.x.