Fix assertion for range query in repaired data tracking test
Fix assertion for range query in repaired data tracking test

Patch by Sam Tunnicliffe; reviewed by Marcus Eriksson for CASSANDRA-15019

pauloricardomg/cassandra-dtest,blerer/cassandra-dtest,bdeggleston/cassandra-dtest,pcmanus/cassandra-dtest,stef1927/cassandra-dtest,stef1927/cassandra-dtest,iamaleksey/cassandra-dtest,bdeggleston/cassandra-dtest,blerer/cassandra-dtest,iamaleksey/cassandra-dtest,pauloricardomg/cassandra-dtest