This change reorganizes the JavaScript code used by Odoo's mail features without indicating a visible change for end users. It should make the mail area easier to maintain and evolve while keeping business behavior largely unchanged.

Task-ID 1914207

This update reorganizes the website sales layout structure to make the online shop pages easier to maintain and evolve. Customers should see little to no immediate change, but the work helps support future improvements to the eCommerce experience.

See https://github.com/odoo/odoo/pull/31147
task-1925327