not using queryset cache when not needed

cvat/apps/dataset_manager/task.py

@@ -113,15 +113,21 @@ def add_prefetch_info(cls, queryset):
         )
 
     def __init__(self, pk, *, is_prefetched=False, queryset=None):
+        is_custom_queryset = queryset is not None
         if queryset is None:
             queryset = self.add_prefetch_info(models.Job.objects)
 
         if is_prefetched:
             self.db_job: models.Job = queryset.select_related(
                 'segment__task'
             ).select_for_update().get(id=pk)
-        else:
+        elif is_custom_queryset:
             self.db_job: models.Job = get_cached(queryset, pk=int(pk))
+        else:
+            try:
+                self.db_job: models.Job = next(queryset.filter(pk=int(pk)).iterator())
+            except StopIteration:
+                raise models.Job.DoesNotExist()
 
         db_segment = self.db_job.segment
         self.start_frame = db_segment.start_frame