Update the unread counter to match Hamsket syntax

app/store/ServicesList.js

@@ -883,7 +883,7 @@ Ext.define('Hamsket.store.ServicesList', {
 			,description: 'Text on your computer with Messages for web.'
 			,url: 'https://messages.google.com/web'
 			,type: 'messaging'
-			,js_unread: 'function checkUnread(){var a=0;document.querySelectorAll(".text-content.unread").forEach(function(b){b.querySelector(".notifications-off")||a++}),updateBadge(a)}function updateBadge(a){1<=a?rambox.setUnreadCount(a):rambox.clearUnreadCount()}setInterval(checkUnread,3e3);'
+			,js_unread: `let checkUnread=()=>{hamsket.updateBadge(Array.prototype.slice.apply(document.querySelectorAll(".text-content.unread")).reduce((c,b) => b.querySelector(".notifications-off")||1,0))};setInterval(checkUnread,3e3);`
 		}
 	]
 });