AIP-84 | Add multisort to dags list request

In the UI, we default the dags list to show dags with the latest dag run first , which we pass as `-last_dag_run_start_date`. Problem is that the minus symbol seems to make the default sorts also reverse so any dags without a dag run will be in reverse alphabetical order which is counterintuitive for users. If you reverse the dag run start date order, it will also change the alphabetical order. <img width="1711" alt="Image" src="https://github.com/user-attachments/assets/91c38cb5-bc15-4f75-9305-9e5cea966a0b" />