fix: canonicalize singleton partition-view axes for GT lowering#463

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TaoTao-real wants to merge 3 commits intohw-native-sys:mainfrom

TaoTao-real:codex/issue453-singleton-subview-reorder

Commits on Apr 8, 2026

fix: canonicalize singleton partition-view axes for GT lowering
TaoTao-real
committed

Commits on Apr 9, 2026

Restrict singleton-axis canonicalization to ND/DN->NZ tload
TaoTao-real
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Extract subview singleton canonicalization into dedicated pass
TaoTao-real
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