How can I restrict the images selectable by the user in Wagtail's ImageChooserBlock?
Some image content on my Wagtail site must meet certain requirements (e.g. a differing minimum size for banner images, carousel images, etc.).
I know I can validate my image requirements after the edit form data is submitted, but I'd like to make the workflow more user-friendly by restricting the widget to only show images that will pass validation in the first place. What is the best way to go about this?