fix(#3554): correct module_to_os_path to return directory paths

[supercoder-dev]

To resolve the issue, we need to update the module_to_os_path function to check if the found path is a file. If it is, we should return the parent directory instead. This can be done by using Path(src.origin).parent if src.origin is a file.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.28%. Comparing base (5223d2d) to head (e9d8cfc).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3565   +/-   ##
=======================================
  Coverage   98.28%   98.28%           
=======================================
  Files         329      329           
  Lines       14965    14965           
  Branches     2382     2382           
=======================================
  Hits        14708    14708           
  Misses        116      116           
  Partials      141      141           

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[cofin]

@all-contributors, add @supercoder-dev for bugs, code

[github-actions]

Documentation preview will be available shortly at https://litestar-org.github.io/litestar-docs-preview/3565