Moved fixes from ydb repo

Author: Gazizonoki

examples/secondary_index/secondary_index_generate.cpp

@@ -2,6 +2,7 @@
 
 #include <util/thread/pool.h>
 
+#include <mutex>
 #include <random>
 
 using namespace NLastGetopt;

src/client/topic/ut/ut_utils/topic_sdk_test_setup.h

@@ -21,7 +21,7 @@ class TTopicSdkTestSetup {
     void CreateTopicWithAutoscale(const TString& path = TString{TEST_TOPIC}, const TString& consumer = TEST_CONSUMER, size_t partitionCount = 1,
                      size_t maxPartitionCount = 100);
 
-    void DescribeTopic(const TString& path = TEST_TOPIC);
+    void DescribeTopic(const TString& path = TString{TEST_TOPIC});
 
     TString GetEndpoint() const;
     TString GetTopicPath(const TString& name = TString{TEST_TOPIC}) const;