feat(ui): make JS asset load error message translatable (#7388)
- The 'Failed to load asset files from [...]' is now an translatable string.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7388
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: 0ko <0ko@noreply.codeberg.org>
Co-committed-by: 0ko <0ko@noreply.codeberg.org>