Add parent container to the list of options in the WooCommerce step

This parent container is needed so that the last-child CSS pseudo
selector that was added in #4602 works to remove the horizontal line
from the last .mailpoet-wizard-woocommerce-option.

[MAILPOET-4817]

mailpoet/assets/js/src/wizard/steps/woo_commerce_step.jsx

@@ -41,6 +41,7 @@ function WizardWooCommerceStep(props) {
       <p>{MailPoet.I18n.t('wooCommerceSetupInfo')}</p>
       <div className="mailpoet-gap" />
       <form onSubmit={submit}>
+        <div>
           {props.showCustomersImportSetting ? (
             <div className="mailpoet-wizard-woocommerce-option">
               <div className="mailpoet-wizard-woocommerce-toggle">
@@ -113,6 +114,7 @@ function WizardWooCommerceStep(props) {
               </div>
             </div>
           </div>
+        </div>
 
         <div className="mailpoet-gap" />
         <Button