Add actual liquidity delta to Allocated event

[naddison36]

Changes

The Allocated event is confusing when the active lending market is highly utilized and not all the desired liquidity can be redeemed. The assetAmount of the Allocated event it the targeted amount and not necessarily the same as the actual amount that was redeemed.
The Allocated event now contains the targetLiquidityDelta and actualLiquidityDelta amounts.

[Copilot]

Pull Request Overview

This PR enhances the Allocated event to distinguish between target and actual liquidity deltas when allocating assets to/from lending markets. This addresses confusion when lending markets are highly utilized and cannot provide all the desired liquidity for withdrawal.

Key Changes:

• Modified the Allocated event signature to include both targetLiquidityDelta and actualLiquidityDelta parameters
• Updated the allocate() and _allocate() functions to return both target and actual liquidity delta values
• Enhanced documentation to explain the new return values and allocation behavior

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/contracts/AbstractARM.sol	Updated event signature, function signatures, and implementation logic to track and emit both target and actual liquidity deltas; added documentation for the new parameters
test/fork/OriginARM/AllocateWithoutAdapter.sol	Updated all test expectations to verify the new two-parameter Allocated event, including scenarios for deposits, partial withdrawals, full withdrawals, and market liquidity constraints
test/fork/OriginARM/AllocateWithAdapter.sol	Updated test expectations for the adapter-based market allocation scenarios to match the new event signature
test/smoke/EtherFiARMSmokeTest.t.sol	Commented out an assertion for liquidity provider caps (unrelated to the main PR changes)

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