Ignore aggregate subsets on gossip

[AgeManning]

Description

We should implement: https://github.com/ethereum/consensus-specs/pull/2847

This should help filter out duplicates and subset aggregate attestations.

We might need another error case for attestation and sync committee aggregate processing. Potentially @michaelsproul may be best suited for that modification.

We should also adjust the scoring parameters on these topics to account of the lower expected number of messages. Lodestar have indicated they see ~70-80% reduction in message count.