MC-931: Content Vertical Alignment inside a Container for Tab Item

- remove unnecessary function wrapper

Author: anthoula

app/code/Magento/PageBuilder/view/adminhtml/web/template/content-type/tab-item/default/preview.html

@@ -10,7 +10,7 @@
         <if args="$parent.isContainer()">
             <div class="pagebuilder-drop-indicator"></div>
         </if>
-        <div class="pagebuilder-content-type-wrapper" template="{ name: preview.previewTemplate, data: preview, afterRender: function () { preview.dispatchAfterRenderEvent.apply(preview, arguments); } }" attr="{ id: id }"></div>
+        <div class="pagebuilder-content-type-wrapper" template="{ name: preview.previewTemplate, data: preview, afterRender: preview.dispatchAfterRenderEvent.bind(preview) }" attr="{ id: id }"></div>
         <if args="$parent.isContainer() && $index() === $parent.parent.getChildren()().length - 1">
             <div class="pagebuilder-drop-indicator"></div>
         </if>