[FIX] l10n_it_stock_ddt: report language
Steps to reproduce:
- Set up an Italian language company with Italian localisation.
- Set up an English language customer.
- Set up an Italian language supplier.
- Set up a product with dropshipping options.
- Set up a sales order for the product to be dropshipped direct
from the Italian supplier to the English customer.
- Print the DDT report.
Bug:
The report will be printed in Italian.
Fix:
same as delivery slip reuse _get_report_lang
opw-3526633
closes odoo/odoo#137555
Signed-off-by:
William Henrotin (whe) <whe@odoo.com>