chore: one more fix

Author: chemelli74

custom_components/midea_ac_lan/fan.py

@@ -117,7 +117,7 @@ def percentage(self) -> int | None:
         """Midea Fan percentage."""
         if not self.fan_speed:
             return None
-        return round(self.fan_speed * self.percentage_step)
+        return cast("int", round(self.fan_speed * self.percentage_step))
 
     def set_percentage(self, percentage: int) -> None:
         """Midea Fan set percentage."""