[Bug]: dashboard not using all settings field in query (Can't set limitQuantityPerCheckout)

[djkato]

Description of the issue

In dashboard, setting the limitQuantityPerCheckout doesn't do anything. The UI pretends it was set on refresh, but when I go to other page and back to settings, the number is back to default. That's because the variable isn't present in the ShopSettingsUpdate mutation.
I think the problematic line is: https://github.com/saleor/saleor-dashboard/blob/main/src/siteSettings/views/index.tsx#L67

Also, I have set the env variable MAX_CHECKOUT_LINE_QUANTITY=200 for Saleor, but it doesn't do anything.

Steps to reproduce the problem

Try to set dashboard variable.

What did you expect to happen?

The variable to change from default.

Additional information

https://github.com/saleor/saleor-dashboard/blob/main/src/siteSettings/views/index.tsx#L67 add that variable here I think.

Environment

Browser and version: Firefox 126.0.1 (64-bit)
OS and version: Linux
dashboard v3.19.6
core v3.19.38