Refactor Bool member assignment in miot_device.py

Updated Bool member assignment to use _str2bool directly for future decorator compatibility.

Author: sca075

miio/miot_device.py

@@ -26,7 +26,7 @@ def _str2bool(x):
     Float = float
 
     if sys.version_info >= (3, 11):
-        Bool = member(partial(_str2bool))
+        Bool = member(_str2bool) # same as partial that will be a decorator in the future.
     else:
         Bool = partial(_str2bool)