copilot-language-server-arm64 thread taking up over 100% of CPU and throttling the computer

**Describe the bug**
After starting Github copilot for xcode, the "copilot-language-server-arm64" would take up ~200% of CPU on my Apple M4 Max macbook pro, leading to high cpu temperature, slow response doing anything including filing this issue, and making Xcode almost unusable.

**Versions**
- Copilot for Xcode: 0.43.140; this started several versions ago
- Xcode: 26.0.1; this was happening on Xcode 18 as well
- macOS: 15.6.1

**Steps to reproduce**
1. open Xcode
2. Github copilot for xcode would auto open and the issue starts.

**Screenshots**

**Logs**
[github-copilot-for-xcode.log](https://github.com/user-attachments/files/22821847/github-copilot-for-xcode.log)

**Additional context**