notify method
Manually notifies all subscribers that this value has changed.
This is typically called automatically when the value changes, but can be called manually for custom notification scenarios.
Example:
final Readonly<int> readonly = Signal(0).readonly();
readonly.notify(); // Trigger subscribers manually
Implementation
@pragma('vm:prefer-inline')
@pragma('wasm:prefer-inline')
@pragma('dart2js:prefer-inline')
@override
void notify() {
notifyCustom(this);
}