chore: simplify supported_schema_codes

Author: allenporter

roborock/data/containers.py

@@ -237,7 +237,7 @@ def supported_schema_codes(self) -> set[str]:
         """Return a set of fields that are supported by the device."""
         if self.schema is None:
             return set()
-        return set({schema.code for schema in self.schema if schema.code is not None})
+        return {schema.code for schema in self.schema if schema.code is not None}
 
 
 @dataclass