fix: Replace extraData decoding with l2SequenceNumber() call in getGames

[hashcashier]

Resolves #3794

Summary

• Replace manual decodeAbiParameters on game.extraData with an l2SequenceNumber() contract call on each game proxy
• Extract proxy addresses from the metadata (GameId) field and use multicall to batch the calls efficiently
• Add disputeGameAbi with the l2SequenceNumber function signature

Test plan

• Existing getGames tests pass
• Existing getGame tests pass (downstream consumer)
• TypeScript type check passes

[changeset-bot]

🦋 Changeset detected

Latest commit: 1ec0929

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

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viem	Patch

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[hashcashier]

@jxom bumping this up on your radar