[mxfp8 moe training] test floor vs rceil in 3d quantization benchmarks

[danielvegamyhre]

Stacked PRs:

• ->[mxfp8 moe training] test floor vs rceil in 3d quantization benchmarks #3507
• [mxfp8 moe training] update benchmark plots to use new kernel #3506
• [mxfp8 moe training] integrate new cuda kernel for blocked layout for groups along K #3505
• [mxfp8 moe training] add CUDA kernel for per-group conversion of scale factors to blocked layout #3504

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[mxfp8 moe training] test floor vs rceil in 3d quantization benchmarks

[pytorch-bot]

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