[Consensus] Add unit tests for failing empty signature verification (#2754)
[Consensus] Add unit tests for failing empty signature verification (#2754)


aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core