Entity Print webform_submission template stopped working

Here the entity print URL format.

/print/pdf/webform_submission/SID
/print/pdf/webform_submission/SID/debug (Shows the HTML converted to PDF)

Using /print/pdf/webform_submission/SID/debug with Twig debugging enabled the template suggestions are now

<!-- THEME HOOK: 'entity_print__webform_submission__contact' -->
<!-- FILE NAME SUGGESTIONS:
   * entity-print--webform-submission--contact.html.twig
   * entity-print--webform-submission.html.twig
   x entity-print.html.twig
-->
<!-- BEGIN OUTPUT from 'modules/contrib/entity_print/templates/entity-print.html.twig' -->

Here is the source of this change and when webform submission template is missing.

#3017333: Hide submission information from the edit submission page, css only working for admin not anonymous users

We might need to fix this for just the entity print module (aka full display mode)

I think we can use hook_entity_view_alter() to fix this regression.

The below hooks fixes the problem.

/**
 * Implements hook_ENTITY_TYPE_view_alter().
 */
function CUSTOM_MODULE_webform_submission_view_alter(array &$build, \Drupal\Core\Entity\EntityInterface $entity, \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display) {
  if ($build['#view_mode'] === 'full') {
    $build['#theme'] = 'webform_submission';
    $build['submission'] = $build['data'];
  }
}

Still, I think there might be a better approach.

The below webform-submission.html.twig template contains the information, navigation, and the submission (aka data). The bigger issue is the submission (aka data) no longer has a template around it. The template should be provided by the WebformSubmissionViewBuilder and should be called webform-submission-data.html.twig. I think we can make this improvement without causing any regressions.

The webform-submission-data.html.twig would be used by the entity_print.module and provide a consistent way to alter the submission data without the information or navigation.

{#
/**
 * @file
 * Default theme implementation for webform submission.
 *
 * Available variables:
 * - elements: An array of elements to display in view mode.
 * - webform_submission: The webform submission.
 * - webform: The webform.
 *
 * @see template_preprocess_webform_submission()
 *
 * @ingroup themeable
 */
#}
{%
set classes = [
'webform-submission',
'webform-submission--webform-' ~ webform.id()|clean_class,
webform_submission.isSticky() ? 'webform-submission--sticky',
view_mode ? 'webform-submission--view-mode-' ~ view_mode|clean_class,
]
%}
<div{{ attributes.addClass(classes) }}>
{{ navigation }}
{{ information }}
{{ submission }}
</div>

Hello, please if i want to render fields data with {{ submission }}, it is {{ submission.first_name }}? Please help. Thanks