Freeze warped bank to show freeze logs (#11141) (#11145)

(cherry picked from commit 6935e88148)

Co-authored-by: Ryo Onodera <ryoqun@gmail.com>

ledger-tool/src/main.rs

@@ -1407,6 +1407,7 @@ fn main() {
                             .get_first_slot_in_epoch(warp_epoch);
                         let warped_bank =
                             Bank::new_from_parent(&base_bank, base_bank.collector_id(), next_epoch);
+                        warped_bank.freeze();
 
                         println!("Slot: {} => {}", base_bank.slot(), warped_bank.slot());
                         println!("Epoch: {} => {}", base_bank.epoch(), warped_bank.epoch());