fix(ui): hide git note add button for commit if commit already has a note (#6613)
Regression from f5c0570533b0a835a88eb7337da841d071f2de6b
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6613
Reviewed-by: 0ko <0ko@noreply.codeberg.org>
Co-authored-by: Beowulf <beowulf@beocode.eu>
Co-committed-by: Beowulf <beowulf@beocode.eu>