[RemoteConfig]fix cmake build fail caused by std::move
[RemoteConfig]fix cmake build fail caused by std::move

PiperOrigin-RevId: 290367052

firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk