hotfix: updated the xform in form fields (#1298)

Co-authored-by: sujanadh <sujanadh07@gmail.com>

src/backend/app/submissions/submission_routes.py

@@ -361,8 +361,8 @@ async def get_submission_form_fields(
     task_list = await tasks_crud.get_task_id_list(db, project_id)
     odk_credentials = await project_deps.get_odk_credentials(db, project_id)
     odk_form = central_crud.get_odk_form(odk_credentials)
-    response = odk_form.form_fields(project.odkid, str(task_list[0]))
-    return response
+    xform = f"{project.project_name_prefix}_{task_list[0]}_{project.xform_title}"
+    return odk_form.form_fields(project.odkid, xform)
 
 
 @router.get("/submission_table/{project_id}")