sagemathgh-38095: `src/sage/algebras/steenrod/all.py`: Use lazy_import, remove deprecated global import
    
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- The change to use `lazy_import` was cherry-picked from sagemath#37900
- The global import was deprecated in sagemath#32647 (2021)

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URL: sagemath#38095
Reported by: Matthias Köppe
Reviewer(s): Kwankyu Lee