update cache metadata after fetching live logs/blocks/txs

[0xOlias]

the cache metadata gets updated when the historical sync is complete. however, when fetching "live" logs/blocks/txns, they get added to the cache but the metadata never gets updated.

so, when the app rebuilds, it fetches all logs/blocks/txns since the end of the last historical sync despite the fact that the cache store already has all of the data.

this might require a slight remodel for how the cache metadata table(s). worth doing some research on this.