ledger tool halt at slot verify hash (#23424)

ledger/src/blockstore_processor.rs

@@ -1374,6 +1374,8 @@ fn load_frozen_forks(
             )?;
 
             if slot >= dev_halt_at_slot {
+                bank.force_flush_accounts_cache();
+                let _ = bank.verify_bank_hash(false);
                 break;
             }
         }