This fixes former pull request odoo/odoo#78287.
The language installation wizard was invoking toggle_active() on the
target languages, which loads translations for those languages (with
overwrite=False), and then loading translations again (with expected
parameter overwrite).
Simply don't use toggle_active(), and directly set the active field
instead, in order to load translations once with the expected parameter
overwrite.
closesodoo/odoo#90421
X-original-commit: 3e4733859fbe2465c386ec65b7be995b152c8c48
Signed-off-by: Raphael Collet <rco@odoo.com>