[FIX] account: copy journal entry without partner

The partner is not visible in the form so copying can lead to unwanted
behaviours.

Task 2389917
opw-2388430

closes odoo/odoo#62276

X-original-commit: ef1b3332a523f0afdb954f8eb2abb8f442bdca58
Signed-off-by: Quentin De Paoli (qdp) <qdp@openerp.com>
Signed-off-by: wan <william-andre@users.noreply.github.com>

addons/account/models/account_move.py

@@ -1780,6 +1780,8 @@ class AccountMove(models.Model):
         default = dict(default or {})
         if (fields.Date.to_date(default.get('date')) or self.date) <= self.company_id._get_user_fiscal_lock_date():
             default['date'] = self.company_id._get_user_fiscal_lock_date() + timedelta(days=1)
+        if self.move_type == 'entry':
+            default['partner_id'] = False
         return super(AccountMove, self).copy(default)
 
     @api.model_create_multi