Theme setting not remembered

[zachbryant]

Describe the bug

After the change to the new command /settings theme <theme>, I have trouble getting it to stay on my default. I keep having to select the default theme instead of the blue github theme.

Affected version

GitHub Copilot CLI 1.0.69-0

Steps to reproduce the behavior

1. Open copilot on new codespace
2. Theme setting is "github" not "default"

Expected behavior

Default theme is default

Additional context

No response