[FIX] web_tour: no step

- Create a tour with only one step for Community
`edition: 'community'`
- Install a database in Enterprise

`tip.in_modal` in `_check_for_tooltip` cashes since `tip` is undefined.

opw-1998603

closes odoo/odoo#33430

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/web_tour/static/src/js/tour_manager.js

@@ -193,6 +193,9 @@ return core.Class.extend(mixins.EventDispatcherMixin, ServicesMixin, {
      * @returns {boolean} true if a tip was found and activated/updated
      */
     _check_for_tooltip: function (tip, tour_name) {
+        if (tip === undefined) {
+            return true;
+        }
 
         if ($('body').hasClass('o_ui_blocked')) {
             this._deactivate_tip(tip);