the click callback accepts an event as its third param

See https://github.com/electron/electron/blob/6d45052eeaf57faf239523b1b328cf37281ae030/lib/browser/api/menu-item.js#L52

electron/index.d.ts

@@ -2492,7 +2492,7 @@ declare namespace Electron {
 		/**
 		 * Callback when the menu item is clicked.
 		 */
-		click?: (menuItem: MenuItem, browserWindow: BrowserWindow) => void;
+		click?: (menuItem: MenuItem, browserWindow: BrowserWindow, event: Event) => void;
 		/**
 		 * Can be normal, separator, submenu, checkbox or radio.
 		 */