Ninja: Revert "Exclude NVHPC -Werror flags during Fortran preprocessing" Revert commit 6b58cdd4cf (Ninja: Exclude NVHPC -Werror flags during Fortran preprocessing, 2023-04-04). Since commit 9d40f01442 (NVHPC: Use -Werror for COMPILE_OPTIONS_WARNING_AS_ERROR, 2023-04-13), `nvfortran` can handle the plain `-Werror` flag during preprocessing. Issue: #24665