Improve UX querying rpc for blocks at or before the snapshot from boot#23403

Merged

CriesofCarrots merged 3 commits intosolana-labs:masterfrom CriesofCarrots:blockstore-first

Mar 1, 2022

+22-18

Commits on Mar 1, 2022

Bump first-available block to first complete block
Tyera Eulberg
committed
Remove obsolete purges in tests (PrimaryIndex toggling no longer in use
Tyera Eulberg
committed
Check first-available block in Rpc check_slot_cleaned_up
Tyera Eulberg
committed