Add InvalidEntryException

[Nathan Andersen (oknate)]

When there is a validation error message, you can't view the entire message in a catch statement easily:
before:

$body = Utils::jsonDecode($e->getPrevious()->getResponse()->getBody());
                        if (!empty($body?->sys?->id) && $body->sys->id === 'InvalidEntry') {
                            $details['errors'] = $body->details->errors;
                        }

after:

if ($e instanceof InvalidEntryException) {
          $details['errors'] = $e->getErrors();
      }