Fix student profile data download for courses with extended profile fields

lms/djangoapps/instructor_task/api.py

@@ -337,7 +337,7 @@ def submit_calculate_students_features_csv(request, course_key, features):
     """
     task_type = 'profile_info_csv'
     task_class = calculate_students_features_csv
-    task_input = {'features': features}
+    task_input = features
     task_key = ""
 
     return submit_task(request, task_type, task_class, course_key, task_input, task_key)

lms/djangoapps/instructor_task/tasks_helper.py

@@ -996,7 +996,7 @@ def upload_students_csv(_xmodule_instance_args, _entry_id, course_id, task_input
     task_progress.update_task_state(extra_meta=current_step)
 
     # compute the student features table and format it
-    query_features = task_input.get('features')
+    query_features = task_input
     student_data = enrolled_students_features(course_id, query_features)
     header, rows = format_dictlist(student_data, query_features)