nightly-2023-12-01: chore: remove unnecessary conversions from `add_constant` (#3651)

# Description

## Problem\*

Resolves <!-- Link to GitHub Issue -->

## Summary\*

This PR updates new code from #3617 to use the new form of
`add_constant` added in #3647.

## Additional Context



## Documentation\*

Check one:
- [x] No documentation needed.
- [ ] Documentation included in this PR.
- [ ] **[Exceptional Case]** Documentation to be submitted in a separate
PR.

# PR Checklist\*

- [x] I have tested the changes locally.
- [x] I have formatted the changes with [Prettier](https://prettier.io/)
and/or `cargo fmt` on default settings.