Vineyard: from unordered chunks.

[sighingnow]

What do these changes do?

Fixes bugs in processing chunk index of vineyard's global dataframe.

The global dataframe may be generated by upstream systems and is row-splitted without a valid global chunk_index value.

Related issue number

N/A

Check code requirements

• [ ] tests added / passed (if needed)
• [x] Ensure all linting tests pass, see here for how to run them