Change the default webhook name umm-stripe-webhook

By default, Ultimate Member Stripe listens to the Webhook name umm-stripe-webhook, you may change this with the following code snippet:

add_filter( 'um_stripe_webhook_name', 'um_1092023_stripe_webhook_name', 10, 1 );
function um_1092023_stripe_webhook_name( $webhook_name ){
  return 'my-custom-stripe-webhookname';
}

The above code will make the Stripe extension listen to the URL structure: http://yoursitedomain.com/?my-custom-stripe-webhookname=true