Revert sent refactoring

[mcollina]

Fixes #3107

Checklist

• run npm run test and npm run benchmark
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[mcollina]

Unfortunately #3107 was too breaking, and we have received several regression reports. In order to fix this properly, we need #2702, which is semver-major.

I'm going to revert the refactoring on main but not in next.

[github-actions]

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