Bug report

If I narrow type of a private property of an object, it resets its type if I call any method of the object's parent. But there's no way parent can fiddle with its child's private properties.

Code snippet that reproduces the problem

https://phpstan.org/r/642390af-0c8a-4eb4-876b-c2c54143b0fd

Expected output

I expect the dumped type in both cases is int.