In odoo/odoo@d2238de576 the domain of the
action hr_holidays.hr_leave_action_action_approve_department has been
removed, as the addon was reworked and no domain is needed any more.
However, during a migration from a previous version, the older domain is
not overwritten with an empty value.
With this commit, the domain is set to an empty one, which allows the
migration to correctly update the record.
closesodoo/odoo#59673
X-original-commit: 76c2f412c09ef1169b5cf936f0770cd4200f29e2
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>