Claude (Sonnet 4.6) on AUTOPILOT seems wrongly integrated, doesnt terminate, stop or do anything, keeps infinate internal conversation

### Describe the bug

Since this was working a month ago something fundamentally seem to have been broken.

When select the mentioned model then nothing results from it, it just keeps infinitely looking on internal conversation, this wasnt the case when i used copilot last month, so something must have been broken in the Anthropic model integration.

### Affected version

GitHub Copilot CLI 1.0.40

### Steps to reproduce the behavior

1. Select Sonnet 4.6 (maybe also other, i only tested this)
2. set on autopilot maybe
3. ask it to do literally anything
4. wont reach a result

### Expected behavior

just reach a conclusion, result, fix whatever, instead of infinitely circling in internal conversation and draining tokens

### Additional context

$PSVersionTable

Name Value
---- -----
PSVersion 7.6.1
PSEdition Core
GitCommitId 7.6.1
OS Microsoft Windows 10.0.26200
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.4
SerializationVersion 1.1.0.1
WSManStackVersion 3.0

Comece reproduzindo o problema no GitHub Copilot CLI 1.0.40 com Claude Sonnet 4.6 selecionado no autopilot, usando PowerShell 7.6.1 no Windows 10. Compare o comportamento com o autopilot desativado ou com outro modelo e considere o problema resolvido quando a CLI chegar a uma conclusão ou parar, em vez de ficar em loop indefinidamente e consumir tokens.

Escrita pelo modelo de indexação a partir do texto da issue.