fix: taskbar icon not pushed via composer/persona

@Antosik, partially reverted your PR:
342503e

just specifically this file: https://github.com/NodeBB/NodeBB/blob/342503e07add0edd135549b8f554b6ffa6df830d/public/src/modules/taskbar.js

I'm not 100% sure, but it might be because this hook is called sooner than the hook being registered? https://github.com/NodeBB/nodebb-theme-persona/blob/master/public/persona.js#L100-L101  @julianlam

public/src/modules/taskbar.js

@@ -1,7 +1,7 @@
 'use strict';
 
 
-define('taskbar', ['benchpress', 'translator', 'hooks'], function (Benchpress, translator, hooks) {
+define('taskbar', ['benchpress', 'translator'], function (Benchpress, translator) {
 	var taskbar = {};
 
 	taskbar.init = function () {
@@ -89,7 +89,7 @@ define('taskbar', ['benchpress', 'translator', 'hooks'], function (Benchpress, t
 			element: element,
 		};
 
-		hooks.fire('filter:taskbar.push', data);
+		$(window).trigger('filter:taskbar.push', data);
 
 		if (!element.length && data.module) {
 			createTaskbarItem(data, callback);
@@ -116,7 +116,7 @@ define('taskbar', ['benchpress', 'translator', 'hooks'], function (Benchpress, t
 		btnEl.toggleClass('new', state);
 
 		if (!silent) {
-			hooks.fire('action:taskbar.toggleNew', uuid);
+			$(window).trigger('action:taskbar.toggleNew', uuid);
 		}
 	};
 
@@ -175,7 +175,7 @@ define('taskbar', ['benchpress', 'translator', 'hooks'], function (Benchpress, t
 			data.element = taskbarEl;
 
 			taskbarEl.data(data);
-			hooks.fire('action:taskbar.pushed', data);
+			$(window).trigger('action:taskbar.pushed', data);
 			callback(taskbarEl);
 		});
 	}
@@ -213,4 +213,4 @@ define('taskbar', ['benchpress', 'translator', 'hooks'], function (Benchpress, t
 	};
 
 	return taskbar;
-});
+});