eth/filters, rpc: add --rpc.rangelimit flag and fix filter config pass-through

[lucca30]

Description

Cherry pick from 2.6.5 into 2.7.0

Changes

• Bugfix (non-breaking change that solves an issue)
• Hotfix (change that solves an urgent issue, and requires immediate attention)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• Changes only for a subset of nodes

Breaking changes

Please complete this section if any breaking changes have been made, otherwise delete it

Nodes audience

In case this PR includes changes that must be applied only to a subset of nodes, please specify how you handled it (e.g. by adding a flag with a default value...)

Checklist

• I have added at least 2 reviewer or the whole pos-v1 team
• I have added sufficient documentation in code
• I will be resolving comments - if any - by pushing each fix in a separate commit and linking the commit hash in the comment reply
• Created a task in Jira and informed the team for implementation in Erigon client (if applicable)
• Includes RPC methods changes, and the Notion documentation has been updated

Cross repository changes

• This PR requires changes to heimdall
  • In case link the PR here:
• This PR requires changes to matic-cli
  • In case link the PR here:

Testing

• I have added unit tests
• I have added tests to CI
• I have tested this code manually on local environment
• I have tested this code manually on remote devnet using express-cli
• I have tested this code manually on amoy
• I have created new e2e tests into express-cli

Manual tests

Please complete this section with the steps you performed if you ran manual tests for this functionality, otherwise delete it

Additional comments

Please post additional comments in this section if you have them, otherwise delete it

[claude]

Claude Code Review

This repository is configured for manual code reviews. Comment @claude review to trigger a review.

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[claude]

Code review

No issues found. Checked for bugs and CLAUDE.md compliance.

[codecov]

Codecov Report

❌ Patch coverage is 86.95652% with 6 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (v2.7.0-candidate@2b949e9). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
eth/filters/api.go	88.46%	2 Missing and 1 partial ⚠️
eth/filters/bor_api.go	57.14%	2 Missing and 1 partial ⚠️

❌ Your patch status has failed because the patch coverage (86.95%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@                 Coverage Diff                 @@
##             v2.7.0-candidate    #2149   +/-   ##
===================================================
  Coverage                    ?   51.59%           
===================================================
  Files                       ?      882           
  Lines                       ?   154185           
  Branches                    ?        0           
===================================================
  Hits                        ?    79545           
  Misses                      ?    69467           
  Partials                    ?     5173           

Files with missing lines	Coverage Δ
eth/backend.go	52.47% <100.00%> (ø)
eth/ethconfig/config.go	78.94% <ø> (ø)
eth/filters/filter_system.go	80.41% <ø> (ø)
internal/cli/server/config.go	65.00% <100.00%> (ø)
internal/cli/server/flags.go	100.00% <100.00%> (ø)
eth/filters/api.go	53.87% <88.46%> (ø)
eth/filters/bor_api.go	36.06% <57.14%> (ø)

Files with missing lines	Coverage Δ
eth/backend.go	52.47% <100.00%> (ø)
eth/ethconfig/config.go	78.94% <ø> (ø)
eth/filters/filter_system.go	80.41% <ø> (ø)
internal/cli/server/config.go	65.00% <100.00%> (ø)
internal/cli/server/flags.go	100.00% <100.00%> (ø)
eth/filters/api.go	53.87% <88.46%> (ø)
eth/filters/bor_api.go	36.06% <57.14%> (ø)

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