[QW][3942972] Internal reference/barcode sequence on product.product

# Done by RHT on the 27/05/2024
# Reviewed by SEA on the 03/06/2024
# Review: https://pastebin.com/9sp9W7E7
# Need: have an automatic internal reference
# Task: https://www.odoo.com/odoo/project.task/3942972?cids=1

for product in records.filtered(lambda c: c.default_code is not set):
    code = product.env['ir.sequence'].next_by_code('product.product.sequence')
    product["default_code"] = code
    product["barcode"] = code