Change _GeoSeriesUtility._from_data(index=) default to None

[mroeschke]

Description

An upstream change in cudf uncovered a bug in _GeoSeriesUtility._from_data where False was being passed to cudf.Series(index=) which is an invalid value. The only valid index values are an actual cudf.Index or None, so setting to None as a more appropriate default value

Also updates the location of assert_eq which moved in https://github.com/rapidsai/cudf/pull/16063

Checklist

• [ ] I am familiar with the Contributing Guidelines.
• [ ] New or existing tests cover these changes.
• [ ] The documentation is up to date with these changes.