🐛 `NumberBox` calls `onChanged()` when clicked on

[robkri]

On every click the NumberBox calls the onChanged callback.

Expected behavior
The onChanged callback is only called when the box's content actually changes.

[bdlukaa]

The number box widget calls updateValue when the user taps on the field

fluent_ui/lib/src/controls/form/number_box.dart

Line 599 in 355d058

onTap: updateValue,

updateValue always call widget.onChanged, which is causing this behavior. Ideally, onChanged should only be called when the value is changed.

fluent_ui/lib/src/controls/form/number_box.dart

Lines 698 to 739 in 355d058

	void updateValue() {
	num? value;
	if (controller.text.isNotEmpty) {
	value = num.tryParse(controller.text);
	if (value == null && widget.allowExpressions) {
	try {
	value = Parser()
	.parse(controller.text)
	.evaluate(EvaluationType.REAL, ContextModel());
	// If the value is infinite or not a number, we reset the value with
	// the previous valid value. For example, if the user tap 1024^200
	// (the result is too big), the condition value.isInfinite is true.
	if (value!.isInfinite || value.isNaN) {
	value = previousValidValue;
	}
	} catch (_) {
	value = previousValidValue;
	}
	} else {
	value ??= previousValidValue;
	}
	if (value != null && widget.max != null && value > widget.max!) {
	value = widget.max;
	} else if (value != null && widget.min != null && value < widget.min!) {
	value = widget.min;
	}
	if (T == int) {
	value = value?.toInt();
	} else {
	value = value?.toDouble();
	}
	controller.text = _format(value) ?? '';
	}
	previousValidValue = value;
	if (widget.onChanged != null) {
	widget.onChanged!(value as T?);
	}
	}