Fix tapas scatter (#20149)
* First draft
* Remove scatter dependency
* Add require_torch
* update vectorized sum test, add clone call
* remove artifacts
* fix style
* fix style v2
* remove "scatter" mentions from the code base
* fix isort error
Co-authored-by: Niels Rogge <nielsrogge@Nielss-MacBook-Pro.local>
Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>