Problem/Motivation
When a batch is submitted, the batch runner completely takes over the user interface, preventing any other operations. An example of this is when you install Umami via the installer UI, and the config translation sync runs after submitting the site information form, taking an extra 15-30 seconds to get the site installed.
Instead, if we have the information required already, we could add a batch runner to the site information form page itself, then config translations would download while you're filling out the form. It might still need to block submitting the form until this completes, but it would probably be done by the time you get to the end anyway.
