fix(zero): Ensure full gradient reduction for Muon optimizer with reduce_scatter #7878

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nathon-lee wants to merge 6 commits into deepspeedai:master from nathon-lee:fix_cp_7807

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fix(zero): Ensure full gradient reduction for Muon optimizer with reduce_scatter #7878

Merge branch 'deepspeedai:master' into fix_cp_7807

DCO / DCO succeeded Feb 27, 2026 in 1s

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