[CBO] Asan test memory leak fix (#9791)

Author: pashandor789

ydb/library/yql/dq/opt/dq_opt_hypergraph_ut.cpp

@@ -8,17 +8,21 @@
 #include "dq_opt_make_join_hypergraph.h"
 #include "dq_opt_log.h"
 
+#include <memory>
+
 using namespace NYql;
 using namespace NNodes;
 using namespace NYql::NDq;
 
 std::shared_ptr<IBaseOptimizerNode> CreateChain(size_t size, TString onAttribute, TString tablePrefix="e") {
     std::shared_ptr<IBaseOptimizerNode> root = std::make_shared<TRelOptimizerNode>(tablePrefix + "1", std::make_shared<TOptimizerStatistics>());
+    root->Stats->Labels = std::make_shared<TVector<TString>>(TVector<TString>{tablePrefix + "1"});
     for (size_t i = 1; i < size; ++i) {
         auto eiStr = tablePrefix + ToString(i + 1);
         auto eiPrevStr = tablePrefix + ToString(i);
 
         auto ei = std::make_shared<TRelOptimizerNode>(eiStr, std::make_shared<TOptimizerStatistics>());
+        ei->Stats->Labels = std::make_shared<TVector<TString>>(TVector<TString>{eiStr});
 
         std::set<std::pair<NDq::TJoinColumn, NDq::TJoinColumn>> joinConditions;
         joinConditions.insert({TJoinColumn(eiPrevStr, onAttribute), TJoinColumn(eiStr, onAttribute)});
@@ -31,10 +35,11 @@ std::shared_ptr<IBaseOptimizerNode> CreateChain(size_t size, TString onAttribute
     return root;
 }
 
-
+template <typename TProviderContext = TBaseProviderContext>
 std::shared_ptr<IBaseOptimizerNode> Enumerate(const std::shared_ptr<IBaseOptimizerNode>& root) {
-    auto ctx = TBaseProviderContext();
-    auto optimizer = MakeNativeOptimizerNew(ctx, std::numeric_limits<ui32>::max());
+    auto ctx = TProviderContext();
+    auto optimizer = 
+        std::unique_ptr<IOptimizerNew>(MakeNativeOptimizerNew(ctx, std::numeric_limits<ui32>::max()));
 
     Y_ENSURE(root->Kind == EOptimizerNodeKind::JoinNodeType);
     auto res = optimizer->JoinSearch(std::static_pointer_cast<TJoinOptimizerNode>(root));