API returns total_actual_rides: 0 for all operators on 2025-09-17 !

## Bug Description
The `/gtfs_rides_agg/group_by` endpoint returns `total_actual_rides: 0` for ALL operators when querying data for 2025-09-17.

## API Call

## Expected Behavior
Should return realistic numbers for `total_actual_rides` based on SIRI real-time data.

## Actual Behavior
All operators return `total_actual_rides: 0`, while `total_planned_rides` shows normal values.

## Sample Response
[{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":2,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":1230,"total_planned_rides":1230,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":3,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":20057,"total_planned_rides":46608,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":4,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":3242,"total_planned_rides":4410,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":5,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":6328,"total_planned_rides":24385,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":6,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":1892,"total_planned_rides":4442,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":7,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":2285,"total_planned_rides":3271,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":8,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":744,"total_planned_rides":908,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":10,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":98,"total_planned_rides":98,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":14,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":7354,"total_planned_rides":12105,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":15,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":12618,"total_planned_rides":25872,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":16,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":8559,"total_planned_rides":21014,"total_actual_rides":0},{"gtfs_route_date":null,"gtfs_route_hour":null,"operator_ref":18,"day_of_week":null,"line_ref":null,"route_short_name":null,"route_long_name":null,"total_routes":14100,"total_planned_rides":26736,"total_actual_rides":0} ..

## Impact
This causes the Open Bus Map Search application to display 0% completion rate for all operators.

## Environment
- Date: 2025-09-18
- Query Date Range: 2025-09-17 to 2025-09-18
- All operators affected (2, 3, 4, 5, etc.)