[FEA] Add alternate handling for all null list in join_list_elements #12766
Description
Is your feature request related to a problem? Please describe.
All null list is considered as empty list as special handling in join_list_elements API.
But this special handling may not be required by all the users.
Describe the solution you'd like
Provide an option to skip this special handling.
Describe alternatives you've considered
Replace all nulls in child columns with "null" before using join_list_elements API. But it incurs extra memory and compute time.
Additional context
#12767 workaround due to this special handling.