(List Dropdown) Setting `selectedItem` fails when value is a number and dataSource.value is numeric on HashLink

[NotHyper-474]

In a project I'm trying to implement HashLink support there are list dropdowns which are dynamically generated based on a schema, and one of the schemas contains a map that looks like ['A' => 0, 'B' => 1], which gets turned into something like { text: 'A', value: 0 } in the dataSource.
The project tries to update the dropdown by setting the selected item, but it does so using the value, which works on the C++ target but not on hashlink.

The issue is that setting selectedItem will convert the value passed to it to a string if it's not a anonymous structure.

haxeui-core/haxe/ui/components/DropDown.hx

Lines 493 to 511 in 578d61b

	private override function set_selectedItem(value:Dynamic):Dynamic {
	if (value == null) {
	return value;
	}
	var text = null;
	if (Type.typeof(value) == TObject) {
	text = value.text;
	if (text == null) {
	text = value.value;
	}
	} else {
	text = Std.string(value);
	}
	var index:Int = indexOfItem(text);
	selectedIndex = index;
	return value;
	}

But indexOfItem compares the value with the one in dataSource disregarding the different type it now has (it was an int but now is a string, but value in dataSource is still an int). And in HXCPP for some reason having a:Dynamic = 2, b:String = "2", a == b will return true, but not on HL.

haxeui-core/haxe/ui/components/DropDown.hx

Lines 457 to 458 in 578d61b

	var item:Dynamic = _dropdown.dataSource.get(i);
	if (item == text || item.value == text || item.text == text) {