[FIX] website: hide cookie bar when entering edit mode

Previously :
Once a user enabled the cookie bar, it prevented him from dropping
snippets in the main area of the page because the focus was on
the cookie bar. Dropping snippets there has a confusing behavior and
might make the user think the editor is broken.

Reason :
The cookie bar has an oe_structure class and takes over the body
if it's not hidden or dismissed. The oe_structure allows to drop
snippets.

Fix :
Hiding the cookie bar when user enters edit mode to avoid dropping
snippets in it by mistake.

task-2477430

closes odoo/odoo#68938

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

addons/website/static/src/snippets/s_popup/000.js

@@ -28,6 +28,7 @@ const PopupWidget = publicWidget.Widget.extend({
     destroy: function () {
         this._super.apply(this, arguments);
         $(document).off('mouseleave.open_popup');
+        this.$target.find('.modal').modal('hide');
         clearTimeout(this.timeout);
     },