message: build(CMake): Fix setting default C++ standard
diff: # Override the default set in the Emscripten toolchain (11) to be compatible
  # with ITK's requirement for c++14 or newer.
  # C++17 for string_view support
  -set(CMAKE_C_STANDARD_COMPUTED_DEFAULT 17)
  +set(CMAKE_CXX_STANDARD_COMPUTED_DEFAULT 17)
  if(NOT _ITKWebAssemblyInterface_INCLUDED)
  