ISTWCMS-2509: Move Webform configuration from uw_sites_all

uw_cfg_common.module

@@ -19,3 +19,17 @@ function uw_cfg_common_form_layout_builder_configure_section_alter(array &$form,
   // Ensuring that the contained width is selected by default.
   $form['layout_builder_style']['#default_value'] = $form['layout_builder_style']['#default_value'] ?: 'uw-contained-width';
 }
+
+/**
+ * Implements hook_form_FORM_ID_alter().
+ */
+function uw_cfg_common_form_webform_settings_confirmation_form_alter(array &$form, FormStateInterface $form_state, string $form_id): void {
+  // Remove undesirable Webform submission confirmation types. These appear on
+  // admin/structure/webform/manage/*/settings/confirmation.
+  // The 'modal' type is just a different way to display the message. Disable
+  // for consistency.
+  unset($form['confirmation_type']['confirmation_type']['#options']['modal']);
+  // The 'none' type is only useful along with a custom handler which provides
+  // the confirmation message.
+  unset($form['confirmation_type']['confirmation_type']['#options']['none']);
+}