chore: improved reset_backtest function

Author: xmatthias

freqtrade/optimize/backtesting.py

@@ -427,7 +427,7 @@ def get_pair_precision(self, pair: str, current_time: datetime) -> tuple[float |
     def disable_database_use(self):
         disable_database_use(self.timeframe)
 
-    def reset_backtest(self, enable_protections):
+    def reset_backtest(self, enable_protections: bool = False):
         """
         Backtesting setup method - called once for every call to "backtest()".
         """