Fix NVML mismatch recovery detection

[bigboateng]

Summary

• Match the stable NVML driver/library version mismatch diagnostic
  independently of runtime prefix and capitalization.
• Keep the Naginator retry expression and post-build recovery guard aligned.

Root cause

The recovery logic expected the older, case-sensitive message:

nvml error: driver/library version mismatch

The NVIDIA container runtime now reports:

failed to initialize NVML: Driver/library version mismatch

As a result, affected GPU jobs failed before container startup and the
post-build script incorrectly skipped automatic recovery:

• https://build.osrfoundation.org/job/gz_rendering-ci-pr_any-resolute-amd64/2/
• https://build.osrfoundation.org/job/gz_sensors-ci-pr_any-resolute-amd64/4/

Validation

• Generated all Jenkins DSL XML with OpenJDK 17.
• Ran jenkins-scripts/dsl/dsl_checks.bash.
• Ran jenkins-scripts/docker/sanity_checks.bash.
• Confirmed the generated _test_job_from_dsl.xml uses the updated expression
  in both Naginator and the post-build Groovy guard.
• Confirmed with Java regular expressions that the old expression misses the
  reported runtime message while the updated expression matches both the old
  and reported forms.

The remaining integration check is to run the safe _dsl_test Jenkins fixture
with the reported message and verify retry, recovery relabeling, and reboot
behavior.

[j-rivero]

better approach in #1525.