refactor: update optimistic v3 adjustments to use adjustment data v3

[yeguclu]

📝 Summary

Update optimistic v3 adjustments to use adjustment data v3 format with placeholder_gas_used.

💡 Motivation and Context

For payout transactions, gas_used may differ from gas_limit. The v3 adjustment data format relaxes the gas_limit == gas_used assumption by explicitly providing placeholder_gas_used, allowing the relay to use the actual gas consumed. https://docs.ultrasound.money/builders/optimistic-v3

Without placeholder_gas_used, incorrect gas cost calculations can cause adjustment failures in some cases. Including this field in v3 format enables accurate adjustment processing.

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✅ I have completed the following steps:

• [✅ ] Run make lint
• [✅ ] Run make test
• Added tests (if applicable)