add ILs peer sync

[mehdi-aouadi]

PR Description

Add InclusionListsByCommitteeIndices RPC endpoint

Fixed Issue(s)

fixes #9063

Documentation

• I thought about documentation and added the doc-change-required label to this PR if updates are required.

Changelog

• I thought about adding a changelog entry, and added one if I deemed necessary.

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Note

Medium Risk
Changes P2P request SSZ layout and RPC response selection for inclusion lists, which affects interoperability with peers and what data is served during sync.

Overview
Extends InclusionListsByCommitteeIndices so requests carry a dependent_root alongside slot and committee indices, and wires outbound peer RPC through SyncSource / DefaultEth2Peer (with throttling wrapper delegating unchanged).

On the serve path, InclusionListManager.getInclusionLists now filters stored lists by that root and drops equivocating validators (conflicting messages for the same slot, root, and index). RPC getMaximumResponseChunks is aligned with the number of requested committee bits rather than a fixed config cap.

NodeDataProvider and the inclusion-list RPC handler pass the new field through; tests cover manager lookup/equivocation behavior and peer request encoding.

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