copilot: Add Claude 3.7-Sonnet-Thought model to Copilot Chat (#27409)

- Follow-up to: #25529 

Release Notes:

- Added Claude Sonnet 3.7 Thought to GitHub Copilot Chat
baf03e355bisomo committed on 3/25/2025, 9:56:27 AM· committed by GitHubparent35ec475
2 files changedLine totals unavailable