[jiterator] Make USE_JITERATOR error if jit_macros.h isn't included (#71959)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71959
This matches how `ATen/Config.h` defines other configuration macros.
The justification is that `#ifdef` silently does the wrong thing if
you don't include the correct header files.
Test Plan: Imported from OSS
Reviewed By: ejguan
Differential Revision: D34087855
Pulled By: ngimel
fbshipit-source-id: 8685df9274514d5d382ebb168048ea52214774c8
(cherry picked from commit e42c449d0a592ef9aeb67df05004d8db0b0dcdaa)
