Consider not printing invisible charactors (U+200B, U+2060) in status line

[lljbash]

Describe the bug

When running copilot inside Neovim, the status output can include invisible codepoints (U+200B, U+2060) which show up as <200b>/<2060> in terminal buffers and can break layout, copy, etc..

Affected version

GitHub Copilot CLI 1.0.21.

Steps to reproduce the behavior

1. nvim --clean
2. :term copilot

Expected behavior

Additional context

No response