[Caffe2][warnings] Suppress -Wimplicit-int-float-conversion in TypeSafeSignMath.h for clang (#71369)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71369
Suppress `-Wimplicit-int-float-conversion` in `TypeSafeSignMath.h` when building with clang
Test Plan: CI check
Reviewed By: r-barnes
Differential Revision: D33612983
fbshipit-source-id: cff1239bc252d4a2f54a50a2bbcd48aeb8bf31ca
