menu items shouldn't stay selected

[howudodat]

Describe the bug
A simple menu item (ie: file->open) shouldn't stay selected

To Reproduce
run the demo app, simple menu, click on open, then inspect note that the menuitem has dui-menu-item-selected

Expected behavior
unless the menu is a toggle menu type, it shouldn't stay selected

[howudodat]

so in my case I was able to work around this by deselecting the menu item immediately after it getting selected

		.addPlugin(new RowContextMenuPlugin<>(
			Menu.<String>create()
				.appendChild(MenuItem.<String>create("Add Record").withValue("add"))
				.appendChild(MenuItem.<String>create("Delete Record").withValue("delete"))
				.setMultiSelect(false)
				.setContextMenu(true)
				.setDropDirection(new MouseBestFitDirection())
				.apply(self -> self.addSelectionListener((source, selection) -> {
					TableRow<JHomeRatesHistory> tableRow = RowContextMenuMeta.<JHomeRatesHistory>get(self).get().getTableRow();
					source.ifPresent(menuItem -> {
						menuItem.deselect(true);
						switch (menuItem.getValue()) {
							case "add":
								new DlgSpecials(null).open();
								break;
							case "delete":
								MessageBox.YESNO("Do you really want to delete:\n"+tableRow.getRecord().Notes, true, 
									l->onDelete(tableRow.getRecord()),
									l->{});
								break;
						}
						});
				}))))
		;

But in a situation where menu is used for a Select, you want the item "selected". It seems that maybe this will require another MenuItem type, something like ToggleMenuItem or a property toggleEnabled, etc.

[vegegoku]

new method added to the menu setPreserveSelectionStyles(boolean preserveSelectionStyles) to configure this behavior.