chore: fix incorrect variable check for fallbackRoutingHook

[barajeel]

Description

Fixed an incorrect variable check in the script. Previously, the condition was checking merkle_tree_hook instead of fallback_routing_hook. Now, it correctly verifies fallbackRoutingHook before proceeding, ensuring the intended logic is applied.

Backward compatibility

No breaking changes. The fix only corrects the variable being checked, preserving existing behavior while ensuring proper validation.

Testing

Manually tested by running the script on various addresses.yaml files, confirming that fallbackRoutingHook is correctly validated and the script behaves as expected.

[changeset-bot]

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Latest commit: 12fd38c

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