[PyTorch][Static Runtime] Cleanup: add valueVecFromFastSet (#66996)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66996
We do this conversion a few times, and further diffs (which I'm trying to keep as small as possible) will do it more.
ghstack-source-id: 141496817
Test Plan: CI
Reviewed By: mikeiovine
Differential Revision: D31821037
fbshipit-source-id: 1d3b54cadaedd53189aec6a35ed1a126c6fe4824
