Fix: number[] - maybeCoerceNumber(): processing of number typed arrays

[juergba]

var args = parse(['--file', 'one', '--nr', '5', '2', '--nr', '4'], {
  array: [{ key: 'nr', number: true }],
  configObjects: [{nr: ['1','2','3']}],
  configuration: {
    'combine-arrays': true,
    'flatten-duplicate-arrays': false
  }
})     // { _: [], file: 'one', nr: [ NaN, 4, NaN ] }

The result is incorrect, it should be: { _: [], file: 'one', nr: [ [ 5, 2 ], [ 4 ], [ 1, 2, 3 ] ] }