Allow disabling open/closed/schedule on field widget

Working great for me too. Tests are green. RTBC

#10 works perfectly! Many thanks.

Is there a way I could have the webform field disabled, but have the open/closed/scheduled status enabled? I have webform nodes, and I want editors to be able to open/close the webform without allowing them to change which webform is displayed.

@parisek I appreciate your effort on the feature and patch. The webform module is running into a point where we need to slow down adding new features. You see how this feature request is snowballing into another reasonable feature request in #15.

At the same time, I think a well-documented form/element alter hook that documents how to hide the webform field properties. could be a reasonable compromise.

I am going to move to postponed to leave the discussion open.

Here's what I used.

function my_module_form_alter(array &$form, FormStateInterface $form_state, string $form_id): void {
  if ($form_id === 'node_webform_edit_form' || $form_id === 'node_webform_form') {
    if (!\Drupal::currentUser()->hasPermission('edit any webform')) {
      // Deny access to change which webform is shown.
      $form['webform']['widget'][0]['target_id']['#access'] = FALSE;
      // Deny access to edit webform settings YAML, if enabled.
      if (isset($form['webform']['widget'][0]['settings']['default_data'])) {
        $form['webform']['widget'][0]['settings']['default_data']['#access'] = FALSE;
      }
    }
  }
}