[nano] Full support for UTF8

[AngelAGBL]

Description / Steps to reproduce the issue

Nerd fonts icons doesn't show correctly on nano editor, it shows other characters on screen

Steps to see the issue:

1. Open nano editor
2. Copy 󱫰 icon
3. Paste the icon in nano

Expected behavior

If you are using a nerd font it should display the lecturn icon

Actual behavior

Pasting the icon in nano displays something like ' M-0' using LANG=en_US.UTF-8

Verification

• I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

MSYS_NT-10.0-22631

Are you willing to submit a PR?

No response