[FIX] web_editor: session dependency missing

The session dependency was missing, it is here now.

closes odoo/odoo#33247

Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/web_editor/static/src/js/wysiwyg/widgets/media.js

@@ -6,6 +6,7 @@ var Dialog = require('web.Dialog');
 var fonts = require('wysiwyg.fonts');
 var Widget = require('web.Widget');
 var concurrency = require('web.concurrency');
+var session = require('web.session');
 
 var QWeb = core.qweb;