gh-35372: Replace more `.all` imports
    
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### 📚 Description

This is a follow-up on:
- #35110

As preparation for #35322, which is changing more packages to implicit
namespace packages, we remove `.all` imports from these packages
throughout the Sage library.

This is part of:
- #29705

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### ⌛ Dependencies

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- Depends on #35418
- Depends on #35358
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URL: #35372
Reported by: Matthias Köppe
Reviewer(s): Gonzalo Tornaría