Tidy up ModMenuGenerator versioning

[dplochcoder]

Summary of Changes

Technically the current release generates files with the wrong version but I don't think that's critical, this is about future-proofing. There are multiple other PRs en route to land soon that will bump the version anyway.

Checklist

• No change is too small for a release, so pick one:
  • I have updated the package version following semantic versioning
  • There is another change actively WIP that will update the version (link issue or PR here)
  • This PR does not update user-facing code/config
  • I'm not sure how to set the version and would like the reviewer's help