Update aria_mobile_menu.js

This fixes keyboard accessibility of mobile hamburger menus when using the Divi Menu module or non-default Divi menus. Old code would click every hamburger icon on the page (and there are multiple). This code only clicks the hamburger icon that you're on.

public/partials/js/aria_mobile_menu.js

@@ -17,7 +17,7 @@ jQuery(document).ready(function($) {
 	*/
 	$('.mobile_menu_bar').keyup(function(event) {
 		if (event.keyCode === 13 || event.keyCode === 32) {
-			$('.mobile_menu_bar').click();
+			$(this).click();
 		}
 	});
 
@@ -43,4 +43,4 @@ jQuery(document).ready(function($) {
 		}
 	});
 
-});
+});