Dismiss all unsaved view changes in Drupal

If you get a WSOD on changing a view, you will be stuck with no ability to revert the changes which cause the WSOD.

The fix is to use this code to clear the changes.

\Drupal::keyValueExpirable('tempstore.shared.views')
  ->delete('$YOUR_VIEW_ID_HERE');

You can run this code using the php:script drush command which takes a filepath. You don't need to bootstrap Drupal in the file that you run, drush will do it for you.