fix: remove parent task info from task context (#24285)

Co-authored-by: Qiu Jian <qiujian@yunionyun.com>

pkg/cloudcommon/db/taskman/tasks.go

@@ -688,6 +688,9 @@ func (task *STask) GetRequestContext() appctx.AppContextData {
 			ctxJson.Unmarshal(&ctxData)
 		}
 	}
+	// clear parentTaskId
+	ctxData.TaskId = ""
+	ctxData.TaskNotifyUrl = ""
 	return ctxData
 }