fix: Sort direction toggle not working in listings overview

[datenwurm]

Description

setSortDir reads sortDir directly inside the click handler, capturing a stale value from the render that created the handler. Rapid clicks or batched updates can drop or invert toggles.

Steps to Reproduce

1. Click the sort toggle button in the listings overview twice.
2. Observe that the actual sort direction only changes once.

Expected

Each click toggles asc ↔ desc based on the latest state.

Actual

Toggle is computed from a stale closure value; updates can be lost.