Obviously, the baby's doctor needs to lead this determination.
(and I am not a doctor)
It is very possible to live a full healthy life with only one kidney - but the defect may have affected more than just the kidney.
That said, in the long term it will be important for this person to avoid anything that can contribute to kidney disease (high blood pressure, etc.).
In his/her favor, the western lifestyle has contributed enormously to kidney disease - and thus also kidney disease treatment. So he/she will grow up with rapidly improving treatment technology.