fix(peerdb): use start_slot instead of end_slot for safer actions #8498
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Issue Addressed
Which issue # does this PR address?
None
Proposed Changes
Discussed in private with @jimmygchen, Lighthouse's
earliest_available_slotis guaranteed to always align with epoch boundaries, but as a safety implementation, we should usestart_slotjust in case other clients differ in their implementations.At least we agreed it would be safer for
synced_peers_for_epoch, I also made the change inhas_good_custody_range_sync_peer, but this is to be reviewed please.Additional Info
Please provide any additional information. For example, future considerations
or information useful for reviewers.