fix: bigframes.ml fit with eval data in partial mode avoids join on null index#2355

tswast merged 2 commits intomaingoogleapis/python-bigquery-dataframes:mainfrom

ml-fit-eval-data-fix-4750522966926378079googleapis/python-bigquery-dataframes:ml-fit-eval-data-fix-4750522966926378079Copy head branch name to clipboard