Listen for RxNotifier changes present in the builder method.
builder: All RxNotifier used in this function will be automatically
signed and this function will be called every
time the value of an RxNotifier changes.
filter: Filter reactions and prevent unwanted effects.
Propagates the changes of the RxNotifier placed in the
body function in this widget.
To use this feature, you need to add RxRoot
at the beginning of your application's Widget tree.
Listen for RxNotifier changes present in the body.
body: All RxNotifier used in this function will be automatically
signed and this function will be called every
time the value of an rxNotifier changes.
filter: Filter reactions and prevent unwanted effects. effect: The body function generates a value that can be
retrieved from the effect function.