Cachafla/hotfix descriptions

[cachafla]

Internal Notes for Reviewers

• Apply hotfix to current release on PyPI (2.7) - https://github.com/validmind/validmind-library/pull/322/commits
• Enable pushing to PyPI from this new temporary branch

External Release Notes

[github-actions]

PR Summary

This pull request introduces an enhancement to the _truncate_summary function in the validmind/ai/test_descriptions.py file. The function now includes a check to handle NoneType for the summary parameter. Previously, the function assumed summary was always a string, which could lead to errors if None was passed. The updated function now checks if summary is None before attempting to evaluate its length, ensuring robust handling of NoneType inputs. This change improves the function's reliability and prevents potential runtime errors when None is passed as an argument.

Test Suggestions

• Test _truncate_summary with a None value for summary to ensure it returns None without errors.
• Test _truncate_summary with a string shorter than max_tokens to verify it returns the string unchanged.
• Test _truncate_summary with a string longer than max_tokens to ensure it truncates correctly.
• Test _truncate_summary with edge cases, such as an empty string and a string exactly equal to max_tokens.

[johnwalz97]

checked that branch looks good