fix: set `@bpd.remote_function`s `input_types` and `output_types` default to `None` to allow omitting them when type annotations are present#729

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

b343447415-remote_function-type-annotationsgoogleapis/python-bigquery-dataframes:b343447415-remote_function-type-annotationsCopy head branch name to clipboard