use get_all_locks to get locks for backtest result

freqtrade/persistence/pairlock_middleware.py

@@ -123,3 +123,11 @@ class PairLocks():
             now = datetime.now(timezone.utc)
 
         return len(PairLocks.get_pair_locks(pair, now)) > 0 or PairLocks.is_global_lock(now)
+
+    @staticmethod
+    def get_all_locks() -> List[PairLock]:
+
+        if PairLocks.use_db:
+            return PairLock.query.all()
+        else:
+            return PairLocks.locks