use modalLoaded per review comments

Author: Nazar65

lib/web/mage/adminhtml/browser.js

@@ -19,7 +19,7 @@ define([
 ], function ($, wysiwyg, prompt, confirm, alert, _) {
     window.MediabrowserUtility = {
         windowId: 'modal_dialog_message',
-        intialized: false,
+        modalLoaded: false,
         targetElementId: false,
 
         /**
@@ -53,7 +53,7 @@ define([
             var windowId = this.windowId,
                 content = '<div class="popup-window" id="' + windowId + '"></div>';
 
-            if (this.initialized) {
+            if (this.modalLoaded) {
 
                 if (!_.isUndefined(options)) {
                     this.modal.modal('option', 'closed', options.closed);
@@ -83,7 +83,7 @@ define([
 
             }).done(function (data) {
                 this.modal.html(data).trigger('contentUpdated');
-                this.initialized = true;
+                this.modalLoaded = true;
                 this.setTargetElementId(options, url);
             }.bind(this));