[React Native] ios Build Error - RCT-Folly hash No template named 'unary_function'

[문제]

No template named 'unary_function' in namespace 'std'; did you mean '__unary_function'?

[해결]

Pods > Build Settings > Apple Clang - Preprocessing > Preprocessor Macros 의
Debug, Release 에 아래 값 추가

LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION