Media Window is displayed as a popup. Class "media-library-widget-modal" is removed.

Problem/Motivation

Click on the 'Insert Media' menu in the WYSIWYG editor after adding text, then the media window displays inconsistently.

Steps to Reproduce

1. Add a Text component.
2. Double click on the Text component after adding.
3. Click on the Insert Media menu in the WYSIWYG table.
4. Observe the media window opens up as popup.