add remaining admin functions for duration vault management

[dB2510]

Note

Medium Risk
Adds new DEFAULT_ADMIN_ROLE-gated controls that can change delegation approval, rewards-claim authorization, and forcibly advance vault state to withdrawals, which are sensitive operational actions. Logic is straightforward (address checks + forwarding), but misuse or incorrect role assignment could impact vault access and reward flows.

Overview
Adds three new EigenAdapter admin-callable operations for EigenLayer duration vault management: updateDelegationApprover, setRewardsClaimer, and advanceToWithdrawals, each performing a zero-address guard, forwarding the call to the vault, and emitting new interface events.

Extends IEigenAdapter with the corresponding function declarations and events, updates the duration-vault mock, and adds/updates unit tests to cover success cases, idempotency, and role/zero-address reverts. Minor script/test files are also re-formatted for readability with no behavioral change.

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