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[cxx-interop] compilations that do not enable C++ interoperability sh…
…ould not be able to import modules that do enable C++ interoperability by default
A supplemental hidden frontend option allows advanced users to opt-out of this requirement.
Fixes https://github.com/apple/swift/issues/65833 Fixes https://github.com/apple/swift/issues/65832
@swift-ci please test
@swift-ci please test source compatibility
@swift-ci please test linux platform
@swift-ci please test
@swift-ci please test source compatibility
@swift-ci please test windows platform
@swift-ci please test
@swift-ci please test source compatibility