message: fix: actually run the arg checks
diff: @@ -839,6 +839,7 @@ pub fn nextclade_parse_cli_args() -> Result<(), Report> {
  }
  NextcladeCommands::Run(mut run_args) => {
  nextclade_check_removed_args(&run_args)?;
  + nextclade_check_column_config_args(&run_args)?;
  nextclade_get_output_filenames(&mut run_args).wrap_err("When deducing output filenames")?;
  nextclade_run(*run_args)
  }
  