fix(offline-artifact-tests): use the correct nodetool script

[fruch]

so far the code was using the /share/cassandra/bin/nodetool that is the old java based nodetool that depends on JMX

and now it would use the script from /bin/nodetool that should default to using scylla nodetool command

Testing

• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-rocky8-test/5/
• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-rocky9-test/44/
• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-debian11-test/5/
• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-amazon2023-test/11/
• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-amazon2023-arm-test/6/
• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-ubuntu2004-arm-test/14/
• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-ubuntu2004-test/26/
• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-ubuntu2404-test/14/
• [ ] 🔴 https://jenkins.scylladb.com/job/scylla-staging/job/fruch/job/artifacts-ubuntu2404-arm-test/7/

PR pre-checks (self review)

• [ ] I added the relevant backport labels
• [x] I didn't leave commented-out/debugging code

Reminders

• Add New configuration option and document them (in sdcm/sct_config.py)
• Add unit tests to cover my changes (under unit-test/ folder)
• Update the Readme/doc folder relevant to this change (if needed)