Currently, when node starts, fork choice is based on an empty LatestMessages set, since LMs/attestations are not stored on disk explicitly.
However, on-chain attestations (inside blocks) are kept in the storage.
Implement bootstrapping initial LM set for LMD GHOST fork choice, from blocks kept in the storage (descendants of the finalized checkpoint).
Currently, when node starts, fork choice is based on an empty LatestMessages set, since LMs/attestations are not stored on disk explicitly.
However, on-chain attestations (inside blocks) are kept in the storage.
Implement bootstrapping initial LM set for LMD GHOST fork choice, from blocks kept in the storage (descendants of the finalized checkpoint).