Update availableHashes

Author: avmoroz

windows/RNFS/RNFSManager.h

@@ -166,7 +166,7 @@ struct RNFSManager final
 
     constexpr static int64_t UNIX_EPOCH_IN_WINRT_INTERVAL = 11644473600 * 10000000;
 
-    const std::map<std::string, std::function<CryptographyCore::HashAlgorithmProvider()>> availableHashes{
+    const std::unordered_map<std::string, std::function<CryptographyCore::HashAlgorithmProvider()>> availableHashes{
         {"md5", []() { return CryptographyCore::HashAlgorithmProvider::OpenAlgorithm(CryptographyCore::HashAlgorithmNames::Md5()); } },
         {"sha1", []() { return CryptographyCore::HashAlgorithmProvider::OpenAlgorithm(CryptographyCore::HashAlgorithmNames::Sha1()); } },
         {"sha256", []() { return CryptographyCore::HashAlgorithmProvider::OpenAlgorithm(CryptographyCore::HashAlgorithmNames::Sha256()); } },