[IMP] fleet: Close driver history on driver change

Purpose
=======
If you set a future driver and click on "apply change", a new assignation log is
automatically created for the new driver.
But the end date of the former assignation isn't populate.

Specifications
==============
Set the date "end date" for the former driver with the "start date" of the
new driver.

closes odoo/odoo#44635

Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

addons/fleet/models/fleet_vehicle.py

@@ -238,6 +238,7 @@ class FleetVehicle(models.Model):
             })
 
     def action_accept_driver_change(self):
+        self._close_driver_history()
         # Find all the vehicles for which the driver is the future_driver_id
         # remove their driver_id and close their history using current date
         vehicles = self.search([('driver_id', 'in', self.mapped('future_driver_id').ids)])