Fix state usage in csv files upload (#19398)

Author: iddqdex

ydb/apps/ydb/CHANGELOG.md

@@ -1,3 +1,4 @@
+* Fixed bug with state working in commnads `ydb workload query import` and `ydb workload clickbench import files`.
 
 ## 2.22.0 ##
 

ydb/library/workload/benchmark_base/data_generator.cpp

@@ -130,7 +130,7 @@ class TWorkloadDataInitializerBase::TDataGenerator::TCsvFileBase: public TWorklo
             Path,
             TDataPortion::TCsv(std::move(data), Foramt),
             position,
-            lines.size()
+            readBytes
         );
     }