[FIX] stock_account: prevent stock account update on product change when using...

[FIX] stock_account: prevent stock account update on product change when using manual stock valuation

If the category of a product is using manual stock valuation, when changing the product on an invoice line,
the account should not be set to the `property_stock_account_input_categ_id`. It should be the case only if
we use automatic/real-time stock valuation.

opw-3226536

closes odoo/odoo#119662

X-original-commit: 1f888943
Signed-off-by: Brice Bartoletti (bib) <bib@odoo.com>
Signed-off-by: Ricardo Gomes Rodrigues (rigr) <rigr@odoo.com>