test: more slashing integration todos (#961)

* test(wip): todos

* fix: dealloc issue

* fix: remaining

* fix: forktest upgrade issue

* test: add `check_Withdrawal_AsShares_State_AfterSlash`

* refactor: cleanup

* fix: ci

* refactor: review changes

Author: 0xClandestine

src/test/integration/tests/Deposit_Delegate_Allocate.t.sol

@@ -131,6 +131,7 @@ contract Integration_Deposit_Delegate_Allocate is IntegrationCheckUtils {
         // 5. Undelegate from an operator
         IDelegationManagerTypes.Withdrawal[] memory withdrawals = staker.undelegate();
         bytes32[] memory withdrawalRoots = _getWithdrawalHashes(withdrawals);
+
         // 6. Complete withdrawal
         _rollBlocksForCompleteWithdrawals(withdrawals);
         for (uint256 i = 0; i < withdrawals.length; ++i) {