"Tech Triumph: Snapchain Error Codes Get a Major Overhaul!"

"Revolutionary Fix Enhances HubNode's Error Handling, Streamlining User Experience and Technical Accuracy!"

Commit Details:

fix: Ensure snapchain error codes are passed through (#2567) ## Why is this change needed? Snapchain sends the error codes back using a different header name. Read that as well. ## Merge Checklist _Choose all relevant options below by adding an `x` now or at any time before submitting for review_ - [x] PR title adheres to the [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/) standard - [x] PR has a [changeset](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#35-adding-changesets) - [x] PR has been tagged with a change label(s) (i.e. documentation, feature, bugfix, or chore) - [ ] PR includes [documentation](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#32-writing-docs) if necessary. <!-- start pr-codex --> --- ## PR-Codex overview This PR focuses on improving error handling in the `hub-nodejs` package by ensuring that error codes from the snapchain are correctly passed through to the `HubError`. ### Detailed summary - Updated error handling in `packages/hub-nodejs/src/client.ts`. - Modified the way `HubError` is instantiated to use `hubErrorCode`, which retrieves error codes from both `err.metadata.get("errCode")` and `err.metadata.get("x-err-code")`. > ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}` <!-- end pr-codex -->