Lock down "Test pit/match form" dialog so user can't navigate away inside the dialog

[JL102]

The fact that you can navigate away from the test-form page inside the dialog can lead to confusion:

I'm trying to make a pit scouting form. I paste the JSON into the text box and click the "Test Form" button. It opens the dialog window as advertised. When I then click the "Submit" button on that dialog, it says "Submitted Data Successfully", but then redirects me to the Admin Dashboard inside the dialog box. If I refresh, it takes me back to the form entry page with the example JSON (outside the dialog). If instead I click the "One-off pit scouting" button, it takes me to a blank pit scouting page inside the dialog, with only the basic information and the "Refresh with team photos" button. Clicking it just changes some text. Refreshing the web page here does the same thing as refreshing it after submitting the form.

Maybe a way to fix this is to disable all links on the test form page, or simply disable the submit button and render the page without the navigation bar.