Add notification UX for HITL actions

[parkhojeong]

Create a HITL Modal for quick action. It helps user can quickly reply pending HITL tasks.
Two types of UI are Modal or Drawer

Modal: show the pending HITL tasks with quick action.

• Home(/): when the Required Actions Button is clicked, show the Modal for the all tasks.
• Dag page(/dags/{dag_id}): replace Required Actions tab with Required Actions Button. When the Button is clicked, show the Modal including tasks for that Dag with filters for Pending(default) and All.
• Dag Run page(dags/{dag_id}/runs/{dag_run_id}): replace Required Actions tab with Required Actions Button. When the Button is clicked, show the Modal including tasks for that Dag Run with filters for Pending(default) and All.

Notes: Dag page, Dag Run page ending with /required_actions: - show the Modal with pending filter by default for the backward compatibility.

Drawer: show the action for pending HITL task.

• Browse -> Required Actions(/required_actions): when the row is clicked, show the Drawer

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• related: Create notification UX for HITL and Deadline Alerts #64847