Owner-route finalize slot account cleanup

[ArthurPaivaT]

• Routes the finalize-slot account cleanup by owner and pubkey together instead of by pubkey alone, so on the owner-partitioned accounts tables each delete prunes to a single partition rather than scanning all of them.
• Resolves the owner from the in-memory owner map, not the incoming block, so a changed-owner account is deleted under its previous owner. The map already holds the prior owner plus that slot's changed owners, so this needs no extra database read.
• The whole path is inert unless the owner map is enabled.

Indexer (crates/index, crates/core)

• AccountsReceivedPerBlock now carries the per-account owners and the closed-cleanup pubkey and owner lists.
• New helper closed_cleanup_pairs builds the closed-account delete set from the map plus the slot's changed owners.
• Two new query files: cleanupWithOwner.sql for open rows (slot strictly below the finalized slot) and cleanupClosedWithOwner.sql for closed rows (slot at or below).
• Owner routing runs only when every pubkey in the batch has a resolved owner. Otherwise it falls back to the previous pubkey-only path.