Disable route to hidden pages

### Description

Hello,

When I hide a page using UI-CONTROL or the settings, it is removed from the menu. However, if someone navigates directly to the URL of the hidden page, its content is still displayed on the screen. Is it possible to completely disable the page so that users cannot access or see it, even if they enter the URL directly?

The approach using the UI-CONTROL "change" event (i.e., redirecting the user to a different page) still briefly displays the entered page.

Thank You

### Have you provided an initial effort estimate for this issue?

I am no FlowFuse team member