Dispatches the whitelisted IsmpOptimism.setDisputeGameFactories call that lets Nexus verify Base's game type 621 proofs again after Base's Cobalt upgrade.

Why

Base's Cobalt upgrade redeployed its AggregateVerifier on mainnet and re-registered it for game
type 621 on the factory at 0x43edb88c4B80fDD2AdFF2412A7BebF9dF42cB40e. Nexus still expects the previous implementation, 0xeE303bA054c5F1E14A8EF87f1C7E285af45A1ba2, so every new proof is rejected with GameImplMismatch.