docs(base-contracts): fix Sepolia batch sender, refresh AggregateVerifier addresses

[kriss39]

What changed? Why?

Three rows on specifications/reference/base-contracts no longer match what is on chain:

• Base Sepolia → Batch Sender: 0x6CDEbe94…3E47 → 0xfc56E727…8bA3. Sepolia SystemConfig.batcherHash() returns 0xfc56e727…, and that is the only address posting to the 0xff…84532 batch inbox right now.
• AggregateVerifier (mainnet and Sepolia): the listed addresses are older implementations. DisputeGameFactory.gameImpls(621) (621 is the Portal's respectedGameType) returns 0xeE303bA0…1ba2 on mainnet and 0x48cB1A96…764C on Sepolia, and the games being created today are clones of those.
• Base Sepolia → FaultDisputeGame (Kona): removed. It was a duplicate of the FaultDisputeGame row above it (same address, gameImpls(0)).

Notes to reviewers

Everything above is a read-only eth_call you can repeat:

# Sepolia SystemConfig 0xf272670e…6194, batcherHash()
cast call 0xf272670eb55e895584501d564AfEB048bEd26194 'batcherHash()(bytes32)' --rpc-url <sepolia>
# mainnet DisputeGameFactory 0x43edB88C…B40e, gameImpls(621)
cast call 0x43edB88C4B80fDD2AdFF2412A7BebF9dF42cB40e 'gameImpls(uint32)(address)' 621 --rpc-url <mainnet>
# Sepolia DisputeGameFactory 0xd6E6dBf4…06E1
cast call 0xd6E6dBf4F7EA0ac412fD8b65ED297e64BB7a06E1 'gameImpls(uint32)(address)' 621 --rpc-url <sepolia>

The mainnet Batch Sender (0x5050f69a…) already matches batcherHash(), so it is untouched. I left the other rows alone (e.g. SystemDictator, the mainnet legacy OptimismMintableERC20Factory) since those are judgement calls rather than wrong values.

How has it been tested?

node scripts/lint-mdx.js docs/specifications/reference/base-contracts.mdx and node scripts/validate-docs-structure.js pass.

Screenshots

N/A (table cell edits only)

[cb-heimdall]

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