Enable support for Filecoin.EthNewFilter V2

[sudo-shashank]

Summary of changes

Changes introduced in this pull request:

• Enabled support for Filecoin.EthNewFilter V2 as Safe and Finalized are not yet implemented in lotus.

Reference issue to close (if applicable)

Closes #6304

Other information and links

• Tracking Issue in forest: Add support for more block tags (e.g. finalized, safe) in Filecoin.EthGetLogs #6411

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.

Outside contributions

• I have read and agree to the CONTRIBUTING document.
• I have read and agree to the AI Policy document. I understand that failure to comply with the guidelines will lead to rejection of the pull request.

Summary by CodeRabbit

• New Features
  • Filecoin.EthNewFilter is now enabled and reachable via the API v2 endpoints. This makes the method available to clients using v2 without changing its parameters, return values, or runtime behavior. No other functional changes were introduced.

[coderabbitai]

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Walkthrough

Enable Filecoin.EthNewFilter for API v2 routing by changing its API_PATHS from ApiPaths::all() to ApiPaths::all_with_v2() and add a changelog entry documenting the change.

Changes

Cohort / File(s)	Summary
Documentation CHANGELOG.md	Add changelog entry noting Filecoin.EthNewFilter enabled for API v2.
RPC Method Configuration src/rpc/methods/eth.rs	Update EthNewFilter const API_PATHS from ApiPaths::all() to ApiPaths::all_with_v2() to enable v2 routing.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Fix test for eth_newFilter creation #6104 — Touches eth_newFilter RPC; enforces creation limits and updates tests related to the same RPC.
• feat: enable V2 API support for basic Eth and Filecoin RPC methods #6171 — Makes the same ApiPaths::all() → ApiPaths::all_with_v2() change for EthNewFilter.
• Enable support for Filecoin.EthGetBlockTransactionCountByHash V2 #6466 — Applies the all_with_v2 API_PATHS pattern to other Eth RPC methods.

Suggested reviewers

• LesnyRumcajs
• akaladarshi
• hanabi1224

🚥 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 PR title 'Enable support for Filecoin.EthNewFilter V2' directly matches the main change: updating API_PATHS for EthNewFilter from all() to all_with_v2().
Linked Issues check	✅ Passed	The PR addresses issue #6304 for enabling RPC v2 support for Filecoin.EthNewFilter by updating the API_PATHS constant and documenting the change in the changelog.
Out of Scope Changes check	✅ Passed	All changes are directly related to enabling V2 API support for EthNewFilter: CHANGELOG entry, API_PATHS update, and no unrelated 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 unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch shashank/enable-eth-new-filter-v2

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.32%. Comparing base (b5c8f56) to head (af6ebc9).

Additional details and impacted files

Files with missing lines	Coverage Δ
src/rpc/methods/eth.rs	69.55% <ø> (ø)

... and 6 files with indirect coverage changes

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[hanabi1224]

I believe this PR will fail the openrpc test enabled by #6523. Let's hold until the other one is merged.