Webform submission form id no longer includes the source entity type and id

Previously, the webform submission form id included the source entity type and id in the form ID which required modules to create hook_form_FORM_ID_alter() hooks like...

hook_form_{BASE_FORM_ID}_{WEBFORM_ID}_{ENTITY_TYPE}_{ENTITY_ID}_{OPERATION}_form_alter()

For example, if the Contact webform was attached to a Webform Node the hook_form_FORM_ID_alter() would be...

/**
  * Implements hook_form_FORM_ID_alter().
  */
function CUSTOM_MODULE_form_webform_submission_form_contact_node_12345_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state){
...
}

Now, modules should target just the webform id and operation when using hook_form_FORM_ID_alter().

hook_form_{BASE_FORM_ID}_{WEBFORM_ID}_{OPERATION}_form_alter()

For example, to alter the Contact webform the hook is now...

/**
  * Implements hook_form_FORM_ID_alter().
  */
function CUSTOM_MODULE_form_webform_submission_contact_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state) {
...
}