[IMP] web: Hovering out of a systray menu item closes its submenus dropdown

While hovering in the systray a menu dropdown can only be open if user currently on his parent menu.

It should close when user hover on another systray menu.

Task: #1959678

closes odoo/odoo#32322

Signed-off-by: VincentSchippefilt <VincentSchippefilt@users.noreply.github.com>

addons/web/static/src/js/chrome/menu.js

@@ -226,7 +226,10 @@ var Menu = Widget.extend({
         var $target = $(ev.currentTarget);
         var $opened = $target.siblings('.show');
         if ($opened.length) {
+            $opened.find('[data-toggle="dropdown"]').dropdown('toggle');
+            $opened.removeClass('show');
             $target.find('[data-toggle="dropdown"]').dropdown('toggle');
+            $target.addClass('show');
         }
     },
 });