Resolve the FP8 conversion conflict by using direct float2-to-E4M3 conversion on all CUDA architectures while preserving the MSCCL++ packed vector storage path.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: efbacae6-f679-430b-bc16-b45ae162fc76