fix(delayedack): bind packet finalization to state roots

[jamilahmadzai]

Fixes #364

Summary

• Pass the full finalized RollApp state into delayed-ack finalization.
• Before finalizing a delayed packet, resolve the packet proof channel/client and compare the finalized block descriptor StateRoot with the IBC consensus AppHash at the packet proof height.
• Abort finalization before callbacks/status updates when the roots differ.
• Add regression coverage for mismatch rejection and matching-root finalization, and update integration fixtures to use consensus roots where delayed packets are finalized.

Validation

• go test ./x/delayedack/keeper -run 'TestKeeperTestSuite/TestFinalizeRollappPackets(RejectsConsensusRootMismatch|AllowsMatchingConsensusRoot)$' -count=1 -v
• go test ./x/delayedack/... ./x/rollapp/... ./ibctesting -count=1
• go test ./... -count=1
• git diff --check

Bounty payout

Meta Earth bug bounty payout: $MEC via ME Pass wallet me1ya82w6cjflk9r2qeyfeu64sm7gxtfr7mu62w9j.