After discussing this with the team, the `gh config` changes to display `accessible_colors` have been removed from this branch being outside of acceptance criteria. This will be moved to a separate issue along with any other work needed to finalize the public preview such as `gh help` entries for `GH_ACCESSIBLE_COLORS` environment variable.
List commands that use ColorScheme.Gray have been updated to use ColorScheme.Muted.
This commit is focused on incorporating cli/go-gh accessible colors configuration setting into GitHub CLI experience along with new color function to supersede ColorScheme.Gray and ColorScheme.Grayf.
Originally, I was considering having all use of ColorScheme.Gray and ColorScheme.Grayf fallback to the new muted logic if accessible colors were enabled, however I decided not being that it exceeds the acceptance criteria. This means that every command using ColorScheme.Gray needs to be updated to use ColorScheme.Muted
