update MBE channel to commerce onsite (#145)

Author: zlik

app/code/Meta/BusinessExtension/view/adminhtml/templates/setup.phtml

@@ -37,7 +37,7 @@
         , appId: '<?= $escaper->escapeHtml($block->getAppId()) ?>'
         , timeZone: 'America/Los_Angeles'
         , businessVertical: 'ECOMMERCE'
-        , channel: 'DEFAULT'
+        , channel: 'COMMERCE'
         , currency: '<?= $escaper->escapeHtml($block->getCurrencyCode()) ?>'
         , businessName: 'Magento'
         , debug: true