Location choice logsum overwritten with mode choice logsum in estimation mode

[dhensle]

Describe the bug
The location choice logsum gets overwritten by the mode choice logsum in location choice when running in estimation mode.

To Reproduce
Run the estimation example with the DEST_CHOICE_LOGSUM_COLUMN_NAME set in the workplace or school location yaml.

Expected behavior
The location choice logsum should be the location choice logsum, not the mode choice logsum.

Screenshots
workplace location and modechoice logsums are the same, as seen in the below trace

Additional context
This only occurs in estimation mode. The previous code unnecessarily overwrote the location choice logsum with the mode choice logsum of the selected alternative. Based on the code, it seems this was done because the previous coder did not fully comprehend the difference between the location and modechoice logsums, thus treating them as the same. This was also likely complicated by the fact that we now allow the user to return both the modechoice and location choice logsums separately.