Trip destination alts preprocessor for both sample and simulate steps (#869)

* trip_destination alts preprocessor

* non_hh_veh cat, drop unused cols for alts

* blacken

* adding missed alts columns used in xborder model

* remove unneeded addition to categorical

* revert change to drop size terms

* creating separate sample and simulate preprocessors

---------

Co-authored-by: Jeffrey Newman <[email protected]>

Author: dhensle

activitysim/abm/models/trip_destination.py

@@ -60,7 +60,8 @@ class TripDestinationSettings(LocationComponentSettings, extra="forbid"):
     PRIMARY_DEST: str = "tour_leg_dest"  # must be created in preprocessor
     REDUNDANT_TOURS_MERGED_CHOOSER_COLUMNS: list[str] | None = None
     preprocessor: PreprocessorSettings | None = None
-    alts_preprocessor: PreprocessorSettings | None = None
+    alts_preprocessor_sample: PreprocessorSettings | None = None
+    alts_preprocessor_simulate: PreprocessorSettings | None = None
     CLEANUP: bool
     fail_some_trips_for_testing: bool = False
     """This setting is used by testing code to force failed trip_destination."""
@@ -202,6 +203,15 @@ def _destination_sample(
 
     log_alt_losers = state.settings.log_alt_losers
 
+    if model_settings.alts_preprocessor_sample:
+        expressions.assign_columns(
+            state,
+            df=alternatives,
+            model_settings=model_settings.alts_preprocessor_sample,
+            locals_dict=locals_dict,
+            trace_label=tracing.extend_trace_label(trace_label, "alts"),
+        )
+
     choices = interaction_sample(
         state,
         choosers=trips,
@@ -936,6 +946,15 @@ def trip_destination_simulate(
     )
     locals_dict.update(skims)
 
+    if model_settings.alts_preprocessor_simulate:
+        expressions.assign_columns(
+            state,
+            df=destination_sample,
+            model_settings=model_settings.alts_preprocessor_simulate,
+            locals_dict=locals_dict,
+            trace_label=tracing.extend_trace_label(trace_label, "alts"),
+        )
+
     log_alt_losers = state.settings.log_alt_losers
     destinations = interaction_sample_simulate(
         state,
@@ -1246,7 +1265,6 @@ def run_trip_destination(
             state.filesystem, model_settings_file_name
         )
     preprocessor_settings = model_settings.preprocessor
-    alts_preprocessor_settings = model_settings.alts_preprocessor
     logsum_settings = state.filesystem.read_model_settings(
         model_settings.LOGSUM_SETTINGS
     )
@@ -1369,15 +1387,6 @@ def run_trip_destination(
                     trace_label=nth_trace_label,
                 )
 
-            if alts_preprocessor_settings:
-                expressions.assign_columns(
-                    state,
-                    df=alternatives,
-                    model_settings=alts_preprocessor_settings,
-                    locals_dict=locals_dict,
-                    trace_label=tracing.extend_trace_label(nth_trace_label, "alts"),
-                )
-
             if isinstance(
                 nth_trips["trip_period"].dtype, pd.api.types.CategoricalDtype
             ):