JQueryUI: fix missing type selectmenu on interface JQueryUI.UI (#32313)

* fix: missing type selectmenu on interface JQueryUI.UI

* Test: property selectmenu missing on type jQuery.ui

types/jqueryui/index.d.ts

@@ -1056,6 +1056,7 @@ declare namespace JQueryUI {
         keyCode: KeyCode;
         menu: Menu;
         progressbar: Progressbar;
+        selectmenu: SelectMenu;
         slider: Slider;
         spinner: Spinner;
         tabs: Tabs;

types/jqueryui/jqueryui-tests.ts

@@ -1862,6 +1862,7 @@ function test_ui() {
     $("aDialog").keypress(function (e) {
         return (e.keyCode == $.ui.keyCode.ENTER);
     });
+    $(".selector").jQuery.ui.selectmenu({ disabled: true });
 }
 
 function test_widget() {