Steps:
- Install `sale_management`
- Go to `Discount & Loyalty`
- Create a new one and set a name
- Change default program type from `discount` to `buy x get y`
- Remove the default rewards
- Add a new one (the default one)
- Click `Save & Close`
- Trigger save
Rewards is reset to default `discount` instead of `buy x get y`
closesodoo/odoo#138523
X-original-commit: 798c69f44bfde2f66826775a5a11fe5e51adb9a8
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>