message: refactor: tweak dependArray change
diff: @@ -156,11 +156,11 @@ export function defineReactive (
  dep.depend()
  if (childOb) {
  childOb.dep.depend()
  - }
  - if (Array.isArray(value) && Object.isExtensible(value)) {
  + if (Array.isArray(value)) {
  dependArray(value)
  }
  }
  + }
  return value
  },
  set: function reactiveSetter (newVal) {
  