Description

• Rename the release-pypi.yml GitHub Action workflow to build_sdist.yml.
• Remove building wheel with sdist (wheels are built in build_wheels.yml).
• Disable automatic upload to PyPI on tag (sdist and wheels will be uploaded manually for the first releases).

Checklist

• The pull request title and description are concise.
• Related issues are linked in the description.
• New dependencies are explained.
• The source code and documentation can be distributed under the MIT license.
• The source code adheres to code standards.
• New classes, functions, and features are thoroughly tested.
• New, user-facing classes, functions, and features are documented.
• New features are covered in tutorials.
• No files other than source code, documentation, and project settings are added to the repository.