Fix new coding standard issues due to rule changes in Coder 8.3.25

Luckily no test failures! I merged the code.

You need to ensure that all use statements are sorted in a case-sensitive manner.

Before:
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\feeds\FeedsEntity;

After:
use Drupal\feeds\FeedsEntity;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Session\AccountInterface;

For parameters that have null as a default value but are not marked as nullable, you need to update the function signatures. The PHP 7.1+ syntax allows you to explicitly mark parameters as nullable using the ? operator.
Before:
public function exampleFunction($param = null) {

}
After:
public function exampleFunction(?string $param = null) {

}

Automatically closed - issue fixed for 2 weeks with no activity.