fix: the map id

Author: Lash-L

roborock/containers.py

@@ -432,7 +432,7 @@ def get_mop_mode_code(self, mop_mode: str) -> int:
     def current_map(self) -> int | None:
         """Returns the current map ID if the map is present."""
         if self.map_status is not None:
-            return (self.map_status - 3) // 4
+            return self.map_status >> 2
         return None