[FIX] portal: typo in domain portal_message_fetch
[FIX] portal: typo in domain portal_message_fetch

In bd4f09f there was a typo in the domain portal message fetch (two `&`
instead of one), luckily this did not cause an error in 11.0

But in master expression.AND normalizes the domain, thus we got an error.

opw-1819702
closes #25131

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