Fixed item assignments

Author: VaghinakDev

src/superannotate/lib/infrastructure/services/item_service.py

@@ -53,6 +53,7 @@ def old_list(self, project_id: int, folder_id: Optional[int], query: Query):
 
     def list(self, project_id: int, folder_id: Optional[int], query: Query):
         query &= Join("metadata", ["path"])
+        query &= Join("assignments")
         entity_context = [
             f'"team_id":{self.client.team_id}',
             f'"project_id":{project_id}',