[FW][FIX] l10n_ar_website_sale_ux: b2c hide subtotal

[fw-bot-adhoc]

Subtotal info in website forms only have sense when we show the detail about the taxes (B2B)

Forward-Port-Of: ingadhoc/website#272

[roboadhoc]

Pull request status dashboard.

[fw-bot-adhoc]

@zaoral @mem-adhoc this PR targets 17.0 and is the last of the forward-port chain.

To merge the full chain, use

@fw-bot-adhoc r+

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[zaoral]

@roboadhoc r+

[fw-bot-adhoc]

@zaoral @mem-adhoc this PR was modified / updated and has become a normal PR. It should be merged the normal way (via @roboadhoc)