fix(plugin): guard against undefined step.name in retryFailedStep

[gololdf1sh]

Problem

When running tests in run-workers mode with retryFailedStep enabled, step events are serialized via step.simplify() before being sent from worker to master process. simplify() maps step.name → title:

// lib/step/base.js — simplify()
return {
  title: step.name,   // ← name becomes title
  args, status, ...
}

The retryFailedStep plugin only reads step.name, which is undefined on simplified objects. The ignoredSteps loop then calls .startsWith() / .match() on undefined, crashing the worker:

TypeError: Cannot read properties of undefined (reading 'startsWith')
    at EventEmitter.<anonymous> (lib/plugin/retryFailedStep.js:119:67)

Fix

Use step.name || step.title so the plugin works with both full Step objects (in-process) and simplified ones (from workers). Falls back to an early return if neither is present.

Testing

• Reproduced crash in run-workers mode (2 workers, 4 tests) — workers crashed consistently
• Applied fix — same run passes, no TypeError
• Unit tests pass (test/unit/plugin/retryFailedStep_test.js — 5 passing, 4 pending/skipped pre-existing)