Sales order quantity decreases now flow through to related delivery and procurement documents, so teams no longer need manual corrections when customers reduce orders. For make-to-order products, unconfirmed purchase requests can also be reduced before they become confirmed purchase orders.

Allows quantity decrease on Sale Orders to be propagated to their related pickings.
If the MTO route is used, the decrease can be propagated to a related RFQ if it wasn't confirmed yet.

Task-2513592

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Forward-Port-Of: #76752

Point of Sale closing now lets staff enter differences for bank payment methods and records those differences correctly in accounting. This helps businesses reconcile card and bank payments more accurately when closing a sales session.

Forward port of https://github.com/odoo/odoo/pull/77351

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