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## Issue Addressed NA ## Proposed Changes - Adds a new function to allow getting a state with a bad state root history for attestation verification. This reduces unnecessary tree hashing during attestation processing, which accounted for 23% of memory allocations (by bytes) in a recent `heaptrack` observation. - Don't clone caches on intermediate epoch-boundary states during block processing. - Reject blocks that are known to fork choice earlier during gossip processing, instead of waiting until after state has been loaded (this only happens in edge-case). - Avoid multiple re-allocations by creating a "forced" exact size iterator. ## Additional Info NA