[FIX] l10n_fr_fec: remove new line

- Make a SO with a product that have a carriage return in its
description
- Export FEC report

The CSV contains new lines and is not correctly formatted.

opw-2026861

closes odoo/odoo#34385

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/l10n_fr_fec/wizard/account_fr_fec.py

@@ -291,7 +291,7 @@ class AccountFrFec(models.TransientModel):
             TO_CHAR(am.date, 'YYYYMMDD') AS PieceDate,
             CASE WHEN aml.name IS NULL OR aml.name = '' THEN '/'
                 WHEN aml.name SIMILAR TO '[\t|\s|\n]*' THEN '/'
-                ELSE replace(replace(aml.name, '|', '/'), '\t', '') END AS EcritureLib,
+                ELSE replace(replace(replace(aml.name, '|', '/'), '\t', ''), '\n', '') END AS EcritureLib,
             replace(CASE WHEN aml.debit = 0 THEN '0,00' ELSE to_char(aml.debit, '000000000000000D99') END, '.', ',') AS Debit,
             replace(CASE WHEN aml.credit = 0 THEN '0,00' ELSE to_char(aml.credit, '000000000000000D99') END, '.', ',') AS Credit,
             CASE WHEN rec.name IS NULL THEN '' ELSE rec.name END AS EcritureLet,