message: fix: short circuit with nullish coalescing operator
diff: @@ -33,7 +33,7 @@ hello world from ./src/<%- name %>.ts!
  async run() {
  const {args, flags} = this.parse(<%- klass %>)
  - const name = flags.name || 'world'
  + const name = flags.name ?? 'world'
  this.log(`hello ${name} from <%- path.replace(/\\/g, '\\\\') %>`)
  if (args.file && flags.force) {
  this.log(`you input --force and --file: ${args.file}`)
  