fix rust module build directory loop

[dintorf]

Description

Fixed the build_and_copy_rust_modules directory loop to properly handle the list of projects.

Pull request type

• [x] Bugfix
• [ ] Algorithm/Module
• [ ] Feature
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Documentation content changes
• [ ] Other (please describe):

Related issues

Issue 477

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Reviewer checklist (the reviewer checks this part)

Module/Algorithm

• [ ] Core algorithm/module implementation
• [ ] Query module implementation
• [ ] Tests provided (unit / e2e)
• [ ] Code documentation
• [ ] README short description

Documentation checklist

• [ ] Add the documentation label tag
• [ ] Add the bug / feature label tag
• [ ] Add the milestone for which this feature is intended
  • If not known, set for a later milestone
• [ ] Write a release note, including added/changed clauses
  • [Release note text]
• [ ] Link the documentation PR here
  • [Documentation PR link]
• [ ] Tag someone from docs team in the comments