Add success confirmation message upon successful user account creation

-- HikaShop version -- : 6.5.2
-- Joomla version -- : 5.4.7

Hello,

In Step 1 of my Checkout Workflow I have Override registration set to No and Show submit button set to Yes. This adds a small Register button after the user registration form.

I also have New User Account Activation set to none, so accounts are activated automatically upon registration.

However, after a successful registration, the registration form and button both disappear without any confirmation. I'd like to have a clear success message confirming that the account was created successfully.

I understand you can set an e-mail to fire at this step, but during the checkout process the user is left to click on the next button to continue the process after assuming the registration went well.

There is already a mechanism for Hikashop to display error messages at this step. For instance, if I attempt to register a new account under an existing username, I get:

<div id="hikashop_messages_" class="hikashop_messages hikashop_"><ul><li>Username in use.</li></ul></div>

submitLogin(..., 'register')

submitBlock('login', ...)