Wrap {absl,crypto::tink::util}::Status::message() calls in std::string() when called in protobuf setters in tink/testing/.
Wrap {absl,crypto::tink::util}::Status::message() calls in std::string() when called in protobuf setters in tink/testing/.

PiperOrigin-RevId: 430039217

google/tink,google/tink,google/tink,google/tink,google/tink,google/tink,google/tink,google/tink