[WEEX-119][iOS] disable tableview estimation row or section height.
[WEEX-119][iOS] disable tableview estimation row or section height.

  according to  https://stackoverflow.com/questions/46445661/ios-11-uitableview-behaviour-changed/46447370#46447370
  https://forums.developer.apple.com/message/245686  this estimation action will make tableview edit abnormal, crash sometimes
  so disable it from iOS 11.

Bug: 119

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