Fix getting next governance sequence #87
Merged
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We need to get the current governance sequence from all chains and then use the
max(governanceSeqsFromAllChains) + 1
as the next governance sequence. But we cannot determine how many governance VAA have already been executed from the ETH contract(as ETH does not store sequence info but uses a map to record all executed VAA, and in Solidity, we cannot get the size of a map). So I modified it here to get the next governance sequence from the explorer-backend.