Integrate MultiNode RPCClientBase with EVM

[DylanTinianov]

Ticket: https://smartcontract-it.atlassian.net/browse/BCFR-1071

Integrated MultiNode RPCClientBase with EVM RPCClient. This extracts a lot of chain-agnostic functionality into the base class inside of chainlink-framework, which will be reused across new Multinode chain integrations and simplify the integration process.

Some EVM specific functionality is implemented in SubscribeToHeads and SubscribeToFinalizedHeads, which are used instead of the RPCClientBase defaults methods (which will be used for new MultiNode integrations).

Requires

Create MultiNode RPCClientBase in chainlink-framework

Soak Testing

Arbitrum Sepolia - 3 RPCs
Namespace: soak-ocr-v1-arbitrum-sepolia-6b507

[github-actions]

AER Report: CI Core ran successfully ✅

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AER Report: Operator UI CI ran successfully ✅

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[github-actions]

Flakeguard Summary

Ran new or updated tests between develop and f05b125 (BCFR-1071-multinode-adaptor).

View Flaky Detector Details | Compare Changes

Found Flaky Tests ❌

Name	Pass Ratio	Panicked?	Timed Out?	Race?	Runs	Successes	Failures	Skips	Package	Package Panicked?	Avg Duration	Code Owners
TestRPCClient_SubscribeToHeads	0.00%	false	false	false	3	0	3	0	github.com/smartcontractkit/chainlink/v2/core/chains/evm/client	false	1.04s	@smartcontractkit/bix-framework, @smartcontractkit/core
TestRPCClient_SubscribeToHeads/App_layer_observations_are_not_affected_by_new_block_if_health_check_flag_is_present	0.00%	false	false	false	3	0	3	0	github.com/smartcontractkit/chainlink/v2/core/chains/evm/client	false	0s	@smartcontractkit/bix-framework, @smartcontractkit/core
TestRPCClient_SubscribeToHeads/Updates_chain_info_on_new_blocks	0.00%	false	false	false	3	0	3	0	github.com/smartcontractkit/chainlink/v2/core/chains/evm/client	false	0s	@smartcontractkit/bix-framework, @smartcontractkit/core

Artifacts

For detailed logs of the failed tests, please refer to the artifact failed-test-results-with-logs.json.

[cl-sonarqube-production]

Quality Gate passed

Issues
0 New issues
1 Fixed issue
0 Accepted issues

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

See analysis details on SonarQube