[Bug] UI clicks ignored on first attempt — requires clicking, pausing, then clicking again (macOS)

### Short summary

Many UI buttons and session items require clicking, pausing briefly, then clicking again before the action takes effect (macOS).

### Affected version or release

1.0.22

### Installation context

_No response_

### What happened?

Many UI interactions in the GitHub Copilot app don't respond to a single click. Instead, I have to click once, pause briefly, and then click again for the action to register. The first click appears to be swallowed or ignored — only after a short pause does the second click take effect.

This affects various buttons and session items throughout the app.

Environment:
- **OS:** macOS 15.5 (24G517)

### Steps to reproduce

1. Open the GitHub Copilot app.
2. Click on a button or a session item (e.g., switching sessions, action buttons).
3. Observe that the first click does not register — there is no visible response.
4. Pause briefly, then click the same target again — the action now takes effect.

### Expected behavior

A single click should trigger the intended action immediately.

### Additional context

- This is reproducible consistently across different buttons and session interactions.
- It is **not** a rapid double-click — the issue is that the first click is ignored and a second click after a brief pause is needed.
- Debug logs:

先在 macOS 15.5 上的 GitHub Copilot app 1.0.22 中重現首次點擊被忽略的行為，同時檢查工作階段項目和動作按鈕。追蹤這些互動所使用的共用點擊處理路徑。當一次點擊能在受影響的整個 UI 中立即產生預期的可見動作時，即表示完成。

由索引模型根據 Issue 內容生成。