fix race on signals counter construction (#2124)

Author: ivanmorozov333

ydb/core/tx/columnshard/blobs_action/counters/storage.cpp

@@ -9,11 +9,7 @@ TStorageCounters::TStorageCounters(const TString& storageId)
 }
 
 std::shared_ptr<NKikimr::NOlap::NBlobOperations::TConsumerCounters> TStorageCounters::GetConsumerCounter(const TString& consumerId) {
-    auto it = ConsumerCounters.find(consumerId);
-    if (it == ConsumerCounters.end()) {
-        it = ConsumerCounters.emplace(consumerId, std::make_shared<TConsumerCounters>(consumerId, *this)).first;
-    }
-    return it->second;
+    return std::make_shared<TConsumerCounters>(consumerId, *this);
 }
 
 TConsumerCounters::TConsumerCounters(const TString& consumerId, const TStorageCounters& parent)

ydb/core/tx/columnshard/blobs_action/counters/storage.h

@@ -25,7 +25,6 @@ class TConsumerCounters: public NColumnShard::TCommonCountersOwner {
 class TStorageCounters: public NColumnShard::TCommonCountersOwner {
 private:
     using TBase = NColumnShard::TCommonCountersOwner;
-    THashMap<TString, std::shared_ptr<TConsumerCounters>> ConsumerCounters;
 public:
     TStorageCounters(const TString& storageId);