chore: remove sim-time timestamp workaround

[mfaferek93]

Pull Request

Summary

The ros2_medkit fault_manager now uses wall clock time for fault timestamps, so the UI workaround for simulation time is no longer needed.

Issue

Link the related issue (required):

• closes #

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Type

• Bug fix
• New feature
• Breaking change
• Documentation only

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Testing

How was this tested / how should reviewers verify it?

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Checklist

• Breaking changes are clearly described (and announced in docs / changelog if needed)
• Linting passes (npm run lint)
• Build succeeds (npm run build)
• Docs were updated if behavior or public API changed

[Copilot]

Pull request overview

This PR removes a workaround in the fault timestamp handling that was needed when ros2_medkit's fault_manager used simulation time instead of wall clock time. The gateway now provides proper Unix timestamps, eliminating the need for client-side detection and correction.

Changes:

• Simplified transformFault method by removing conditional timestamp logic that checked for simulation time (values < year 2000)