Backport of 64f6e50d0c, with a test!
Closes #27109
Purpose
=======
If the model on a reference fields is not modified from the interface
by the user but by the server, the selection is not correctly
recomputed on the interface.
Specification
=============
By calling super first on the '_reset' method, the new model
is taken into account when resetting the selection.
closes odoo/odoo#38109
X-original-commit: b5b992d9c4e85c224ded795ff9ce14d1608b3ed6
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>