Hack to skip cleanup_dead_slots upon snapshot load (#8562)

automerge

ledger/src/snapshot_utils.rs

@@ -447,16 +447,18 @@ pub fn bank_from_archive<P: AsRef<Path>>(
     let mut snapshot_version = String::new();
     File::open(unpacked_version_file).and_then(|mut f| f.read_to_string(&mut snapshot_version))?;
 
-    let bank = rebuild_bank_from_snapshots(
+    let mut bank = rebuild_bank_from_snapshots(
         snapshot_version.trim(),
         account_paths,
         &unpacked_snapshots_dir,
         unpacked_accounts_dir,
     )?;
 
+    bank.work_around_dead_slots_cleaning_bug(true);
     if !bank.verify_snapshot_bank() {
         panic!("Snapshot bank for slot {} failed to verify", bank.slot());
     }
+    bank.work_around_dead_slots_cleaning_bug(false);
     measure.stop();
     info!("{}", measure);