fix: hide hidden options from help output even if they are in a group

[pvdlg]

require('yargs')
.options({
  foo: {
    describe: 'FOO',
    group: 'Hidden',
    hidden: true
  },
  baz: {
    describe: 'BAZ',
    group: 'Hidden',
    hidden: true
  }
})
  .help()
  .argv

Before:

Hidden
  --foo  FOO
  --baz  BAZ

Options:
  --version  Show version number                                       [boolean]
  --help     Show help                                                 [boolean]

After:

Options:
  --version  Show version number                                       [boolean]
  --help     Show help                                                 [boolean]

[bcoe]

this looks good to me, definitely feels like a bug.

[bcoe]

@pvdlg please try npm i yargs@next which should have your patch; let me know if there are any issues.

[pvdlg]

It works as expected, thanks