Field settings disappear if turn off the "Enable cloning" checkbox and save

In the form code, I've found that without this checkbox the config simply deletes:

  public function submitForm(array &$form, FormStateInterface $form_state) {
    $config = $this->configFactory->getEditable($this->getConfigId());

    if (empty($form_state->getValue('enabled'))) {
      $config->delete();
    }
    else {
      $fields = [];
      foreach ($form_state->getValue('fields') as $field_name => $data) {
        if (!empty($data['processor'])) {
          $fields[$field_name]['id'] = $data['processor'];
        }
      }
      $config->set('enabled', TRUE);
      $config->set('local_task_label', $form_state->getValue('local_task_label'));
      $config->set('fields', $fields);
      $config->save();
    }
  }

I think it's a pretty strange behavior because sometimes we need just to disable and then enable back, without re-filling a lot of field settings.

So, maybe add a separate action "Delete" instead of this trick?

Additionally, maybe make the "local_task_label" field required? Because now it can be empty that produces an invisible tab item.

MR to separate deleting a configuration from enabling/disabling it: https://git.drupalcode.org/project/content_entity_clone/-/merge_requests/7