Run StatService in test library (#14269)

Author: Hor911

ydb/core/testlib/test_client.cpp

@@ -110,6 +110,7 @@
 #include <ydb/core/kesus/tablet/tablet.h>
 #include <ydb/core/sys_view/processor/processor.h>
 #include <ydb/core/statistics/aggregator/aggregator.h>
+#include <ydb/core/statistics/service/service.h>
 #include <ydb/core/keyvalue/keyvalue.h>
 #include <ydb/core/persqueue/pq.h>
 #include <ydb/core/persqueue/cluster_tracker.h>
@@ -1363,6 +1364,10 @@ namespace Tests {
                     Runtime->GetAppData(nodeIdx).Counters);
                 const TActorId controllerActorId = Runtime->Register(controllerActor, nodeIdx, Runtime->GetAppData(nodeIdx).BatchPoolId);
                 Runtime->RegisterService(NMemory::MakeMemoryControllerId(0), controllerActorId, nodeIdx);
+
+                auto statActor = NStat::CreateStatService();
+                const TActorId statActorId = Runtime->Register(statActor.Release(), nodeIdx, Runtime->GetAppData(nodeIdx).UserPoolId);
+                Runtime->RegisterService(NStat::MakeStatServiceID(Runtime->GetNodeId(nodeIdx)), statActorId, nodeIdx);
             }
         }