Mismatch in constness types

[ckrd-mark]

Work around cxx and autocxx choking on mismatch in constness types - assumes google/autocxx#799 & dtolnay/cxx#850 are unresolved.

• the header signature:

  const std::shared_ptr<const EncryptedArray>& shareEA() const { return ea; }
  

• the generated code

    ::std::shared_ptr<::helib::EncryptedArray> const *helib$cxxbridge1$Context$shareEA(::helib::Context const &self) noexcept {
      ::std::shared_ptr<::helib::EncryptedArray> const &(::helib::Context::*shareEA$)() const = &::helib::Context::shareEA;
      return &(self.*shareEA$)();
    }
  

• the error

  gen0.cxx:3218:93: error: cannot convert ‘const std::shared_ptr<const helib::EncryptedArray>& (helib::Context::*)() const’ to ‘const std::shared_ptr<helib::EncryptedArray>& (helib::Context::*)() const’ in initialization
  
  cargo:warning= 3218 |   ::std::shared_ptr<::helib::EncryptedArray> const &(::helib::Context::*shareEA$)() const = &::helib::Context::shareEA;
  
  cargo:warning=      |                                                                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~