^^^ Follow George's advice above to rule out tyre squeal on a firm surface.
If the squeal is still present on loose road surface, have a look at the steering fluid for low fluid level or bubbles.
Since you recently had a steering system leak, I would recommend trying to bleed air out of the...
Are you sure it's coming from the tire? Under inflation can cause a squeal while cornering.
But air in the steering system is more common. Dirty contaminated steering fluid can also cause a squeal.