test(evm-node): cover rpc_get_version field population

[kutluhaneth46]

Towards #447

Adds unit tests for rpc_get_version field population. Requesting assignment per CONTRIBUTING — happy to adjust if needed.

[github-actions]

Hi @kutluhaneth46,

Thank you for your interest in contributing to Arc Node.

This PR has been automatically closed because it does not reference a GitHub issue. All PRs must reference an existing issue using the format Closes: #XXX.

To contribute properly:

1. Find an existing issue you'd like to work on, or open a new issue describing your proposed change
2. Comment on the issue requesting assignment and wait for maintainer approval
3. Only submit a PR after you have been assigned to the issue

Please see our CONTRIBUTING.md for more details.

[github-actions]

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