setup abstract method
The setup function that runs once when the widget is created.
This function should return a WidgetBuilder that will be called on each rebuild. Use hooks like useSignal, useComputed, etc. to manage reactive state within this function.
Parameters:
context: The build context
Returns: A widget builder function
Implementation
SetupFunction<T> setup(
SetupBuildContext<T> context, PropsReadonlyNode<T> props);