⚡ Bolt: Remove unnecessary String clone in scheduler hot path

[ovasylenko]

💡 What: Removed a .clone() call on step.handler inside the scheduler.rs loop when dispatching to activepieces.
🎯 Why: handle_ap expects a &str. The code was cloning the String into a new handler_name local variable simply to pass its reference, which creates an entirely unnecessary heap allocation on every evaluation of this hook within the scheduler tick.
📊 Impact: Eliminates a redundant String heap allocation on the hot path for activepieces step evaluation.
🔬 Measurement: Verify via cargo test -p orch8-engine --lib scheduler::tests, ensuring all test cases pass without regressions.

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PR created automatically by Jules for task 14677780503107139046 started by @ovasylenko

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