fix: typehash mismatch nested .action msg

[sathak93]

Description

Fix missing nested-dependency collection in action Goal/Result/Feedback type hashing

calculate_send_goal_hash, calculate_get_result_hash, and calculate_feedback_message_hash in hiroz-codegen's Resolver each insert the action's Goal/Result/Feedback TypeDescription into the deps map used to compute the corresponding RIHS01 type hash, but never call the existing collect_nested_deps helper to also pull in that type's own nested/referenced message dependencies. calculate_service_type_hash performs no recursive expansion of its own — it hashes exactly the flattened referenced_type_descriptions it's given — so any action whose Goal, Result, or Feedback message references a custom nested message type (e.g. a struct field typed as another message, not just primitives) gets an incomplete dependency set and therefore an incorrect RIHS01 hash.

Checklist

• Ran ./scripts/check-local.sh successfully
• Added/updated tests/documentation (if applicable)

---

External contributors: Please open as draft initially. See CONTRIBUTING.md.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}