We probably need to reallocate the slice instead of just clearing it, since the final length might be incorrect

https://github.com/tarampampam/error-pages/blob/8111ecbebcdea75473f018211c50aaeb1d0db959/internal/cli/serve/command.go#L224

https://github.com/tarampampam/error-pages/issues/351#issuecomment-3132736148