Sale Order Disable User Autosubscribe

This module changes a small but visible behaviour in the Sales app. Normally, when a salesperson is assigned to a sale order, Odoo automatically subscribes that person's contact as a follower of the order, so they get notified of every message and change.

With this module installed, that automatic subscription no longer happens. The salesperson can still be set on the order and can still follow it manually if needed, but Odoo will not add them as a follower on its own.

• Applies to sale orders (sale.order) and the salesperson field (user_id).
• Only the automatic follower entry for the salesperson's contact is removed; other followers added by Odoo's standard rules are kept.
• No new menus, screens, buttons or reports are added.
• No configuration options are provided; the behaviour is active as soon as the module is installed.

This is useful for companies whose salespeople do not want their inbox filled with notifications for every order they are assigned to, while still allowing manual following when desired.