Flacky Test: Agent Host E2E — Copilot, cancelling a turn paused for input allows a replacement turn

Build - https://dev.azure.com/monacotools/Monaco/_build/results?buildId=471101&view=logs&j=dcea01d9-8513-5a47-c936-5baceabd8c97&t=41c23879-1a6c-5c6a-0373-fa887737c95b

```
===== Agent Host E2E — Copilot failure =====
1 failing

1) Agent Host E2E — Copilot
cancelling a turn paused for input allows a replacement turn:

+ expected - actual

Error: Timeout waiting for notification (90000ms). Received: action:session/inputNeededRemoved, action:session/chatUpdated, action:chat/turnStarted, action:session/customizationUpdated, root/sessionSummaryChanged
at file:///mnt/vss/_work/1/s/out-build/vs/platform/agentHost/test/node/serverIntegrationTestHelpers.js:399:16

Agent Host E2E — Copilot failed with code 1
```