Fix the tests collecting issue in backwards compatibility tests

[wanliAlex]

Change Summary

Fix a bug in the backwards compatibility tests where the minimum Marqo version marker was not working as expected. Tests are now correctly skipped when the required minimum version is higher than the running Marqo version.

Related Jira Ticket

Checklist

• Tests have been added for changes
• n/a Documentation has been updated
• n/a Breaking changes are clearly identified
• n/a Python client changes linked or N/A

For new field types:

• Tests cover score modifier usage of this new type
• Test indexes updated to cover the new type for all APIs (add docs, search, partial update, etc.)