24-3-15-hotfix: ClickHouse Client optional type fix (#13815) (#13824)

Author: azevaykin

ydb/core/grpc_services/rpc_kh_describe.cpp

@@ -178,7 +178,7 @@ class TKikhouseDescribeTableRPC : public TActorBootstrapped<TKikhouseDescribeTab
             auto* colMeta = Result.add_columns();
             colMeta->set_name(col.second.Name);
             auto& typeInfo = col.second.PType;
-            ProtoFromTypeInfo(typeInfo, *colMeta->mutable_type());
+            ProtoFromTypeInfo(typeInfo, *colMeta->mutable_type(), false);
 
             if (col.second.KeyOrder == -1)
                 continue;