GitHub Copilot Chat shows ‘Language model unavailable’ despite active paid subscription

[Kunda0979]

ADD ISSUE DESCRIPTION HERE

Version: 1.115.0
Commit: 41dd792
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36
Embedder: codespaces

[shivioua]

See: #309766