Enable support for Filecoin.EthGetBlockTransactionCountByHash V2

[sudo-shashank]

Summary of changes

Changes introduced in this pull request:

• Enable V2 API path for Filecoin.EthGetBlockTransactionCountByHash.

Reference issue to close (if applicable)

Closes#6297

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

Summary by CodeRabbit

• New Features

  • Filecoin.EthGetBlockTransactionCountByHash is now enabled and available via API v2.

• Documentation

  • Changelog updated to note the availability of Filecoin.EthGetBlockTransactionCountByHash on API v2.

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[coderabbitai]

Walkthrough

Enables the EthGetBlockTransactionCountByHash RPC method for API v2 by switching its API paths constant from ApiPaths::all() to ApiPaths::all_with_v2() and records the change in the changelog.

Changes

Cohort / File(s)	Summary
Changelog entry CHANGELOG.md	Added entry documenting that Filecoin.EthGetBlockTransactionCountByHash is enabled for API v2
RPC method configuration src/rpc/methods/eth.rs	Updated EthGetBlockTransactionCountByHashAPI_PATHS constant from ApiPaths::all() to ApiPaths::all_with_v2() to enable v2 routing

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• feat: enable V2 API support for basic Eth and Filecoin RPC methods #6171: Enables EthGetBlockTransactionCountByHash (and related Eth methods) for RPC v2 — closely related code-level intent.
• Enable support for Filecoin.EthGetLogs V2 #6405: Applies the same pattern switching Eth RPC methods to ApiPaths::all_with_v2() (e.g., EthGetLogs) — similar change set.

Suggested reviewers

• LesnyRumcajs
• akaladarshi

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: enabling V2 API support for the EthGetBlockTransactionCountByHash RPC method.
Linked Issues check	✅ Passed	The PR successfully implements V2 API path support for Filecoin.EthGetBlockTransactionCountByHash as required by issue #6297, with appropriate code changes and changelog updates.
Out of Scope Changes check	✅ Passed	All changes are directly related to enabling V2 API support for EthGetBlockTransactionCountByHash; no out-of-scope modifications detected.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.39%. Comparing base (e1a5e73) to head (2168870).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

Files with missing lines	Coverage Δ
src/rpc/methods/eth.rs	68.76% <ø> (ø)

... and 6 files with indirect coverage changes

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