[FIX] odoo_referral: notify user if popup is blocked
[FIX] odoo_referral: notify user if popup is blocked

Before this, User was unaware of the fact that Popup might be blocked which due to which window won't be opened.

With this commit, We notify users about that.

closes odoo/odoo#51015

X-original-commit: 393f417ce0d437118fc1ba72f05caeeb42ca70f4
Signed-off-by: Yannick Tivisse (yti) <200a91eb0e5cc4726d6a3430713b580138f34298@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo