[FIX] website: leave 'create screen' when click outside

The purpose of this commit is to hide the Create menu when the user click on
any area other than the link icons.

Note: It was already the case in V10.0 since the options were inside a modal.
      Natively bootstrap would close the modal when clicking outside of it.
      We lost that behavior while refactoring in V11.0 with 297297696 that
      replaced the modal by a pseudo-dropdown

opw-1860196
Closes #25389

addons/website/static/src/js/menu/new_content.js

@@ -14,7 +14,7 @@ var NewContentMenu = websiteNavbarData.WebsiteNavbarActionWidget.extend({
         new_page: '_createNewPage',
     }),
     events: _.extend({}, websiteNavbarData.WebsiteNavbarActionWidget.prototype.events || {}, {
-        'click > a': '_onMenuToggleClick',
+        'click > a, #o_new_content_menu_choices': '_onMenuToggleClick',
     }),
 
     /**
@@ -65,6 +65,7 @@ var NewContentMenu = websiteNavbarData.WebsiteNavbarActionWidget.extend({
 
     /**
      * Called when the menu's toggle button is clicked -> Opens the menu.
+     * Or when there is a click outside the menu's options -> Closes the menu
      *
      * @private
      * @param {Event} ev