Fix regression - exceptions in update callbacks should be re-raised

Otherwise they will log exceptions repeatedly

Author: GDYendell

src/fastcs/attributes.py

@@ -171,6 +171,7 @@ async def update(self, value: T) -> None:
                 logger.opt(exception=e).error(
                     "On update callback failed", attribute=self, value=value
                 )
+                raise
 
     def add_on_update_callback(self, callback: AttrOnUpdateCallback[T]) -> None:
         """Add a callback to be called when the value of the attribute is updated