Back button on mobile should prioritise closing modals before navigating away

Bugs & Issues
1
  1. User enters form view
  2. User clicks on a relation field
  3. User decides to back out of the field by pressing the back button
  4. Page navigates them away from their in-progress form, potentially clearing all fields

If a modal exists in the viewport, i.e. any select or relationship picker, then the mobile’s native back functionality should first close the modal instead of attempting to return to the last accessed view.