feat(enable-sanity-step-name): add step metadata to Driver GPU sanity check

[ndhillon07]

Summary

Add environment variable metadata to the Driver / GPU sanity check step in test_component.yml to enable proper step identification and timeout handling in Grafana dashboards and prolense monitoring.

Changes

• Add STEP_NAME environment variable with Grafana-friendly name (no "/" characters)
• Add STEP_TIMEOUT_MINUTES to match the step's timeout-minutes value (5 minutes)
• Add NO_OUTPUT_TIMEOUT for prolense timeout handling (3 minutes)

Motivation

This change aligns the Driver GPU sanity check step with the existing pattern used in the Test step, ensuring consistent monitoring and observability across workflow steps. The step metadata enables:

• Proper step identification in Grafana dashboards
• Correct timeout handling by prolense monitoring
• Consistent observability patterns across all workflow steps

Testing

• Workflow syntax validated
• Environment variable pattern matches existing Test step implementation

[therock-pr-bot]

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