[Profiler] Fix timestamp discrepancy in profiler_kineto.cpp (#60070)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/60070
PyTorch pull request https://github.com/pytorch/pytorch/pull/57333 changed high_resolution_clock to system_clock but missed one location in profiler_kineto.cpp.
On some platforms (e.g. Windows), high_resolution_clock and system_clock do not map to the same underlying clock and therefore we get mixed timestamps on some platforms.
Reviewed By: wesolwsk
Differential Revision: D29155809
fbshipit-source-id: a6de6b4d550613f26f5577487c3c53716896e219
