[Ruby][Sorbet] T::Struct == is an identity comparison, not an equivalence comparison

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T::Structの==は、hashや通常のStructと異なり同値性ではなく同一性比較になっています。

class Hoge < T::Struct
  const :hoge, Integer
end

a = Hoge.new(hoge: 1)
b = Hoge.new(hoge: 1)

a == b # => false
a == a # => true

issue: https://github.com/sorbet/sorbet/issues/1540
同値性比較用のgem: https://github.com/bellroy/sorbet-struct-comparable