src/vs/platform/actions/browser/menuEntryActionViewItem.ts/DropdownWithDefaultActionViewItem/focus
class DropdownWithDefaultActionViewItem:	override focus(fromRight?: boolean): void {
		if (fromRight) {
			this._dropdown.focus();
		} else {
			this._defaultAction.element!.tabIndex = 0;
			this._defaultAction.element!.focus();
		}
	}