passStyleOf checks ignore some properties when non-enumerable

[gibson042]

Examples:

tagged record

harden(Object.defineProperties({}, {
  [PASS_STYLE]: { value: 'tagged' },
  [Symbol.toStringTag]: { value: 'tagged' },
  payload: { enumerable: true },
  extra: { value: 'unexpected own property' },
}))

remotable

harden({
  __proto__: Object.defineProperties({}, {
    [PASS_STYLE]: { value: 'remotable' },
    [Symbol.toStringTag]: { value: 'Remotable' },
    extra: { value: () => 'unexpected prototype method' },
  })
})