fix typo in iOS pipeline (#22067)
### Description
<!-- Describe your changes. -->
### Motivation and Context
The parameter isn't correct.
Maybe it hasn't negative impact by chance so far.
https://github.com/microsoft/onnxruntime/blob/d8e64bb529c1d0f18efd47710d179205c96ffbca/cmake/CMakeLists.txt#L1712-L1717
