copilot: fix: allow external users to configure inline edit settings
Remove the team-only value restriction from selected hidden advanced inline edit settings while preserving their keys, defaults, validators, and experiment behavior. Add coverage that verifies an external user can configure all ten settings.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 97f1135d-4a33-4139-ab2c-9cb8045ece70