[account_invoice_section_sale_order] Order of line in invoice generated does not respect line's order in sale order

[sergiocorato]

Module

account_invoice_section_sale_order

Describe the bug

When invoicing a sale order with a group, the order of line does not respect the original order in sale order, which is the default behavior.

To Reproduce

Affected versions:

• 14.0: [FIX] sequence of account move lines #1723

Steps to reproduce the behavior:

1. create 2 sale order with multiple lines
2. set sale order group type of invoicing
3. invoice the 2 sale order

Expected behavior
Invoice lines are grouped by sale order, respecting the same sequence in the sale order.

Additional context
Add any other context about the problem here. (e.g. OS, Python version, ...)