Missing use statement in Drupal\Core\Database\Driver\mysql\Connection

Problem/Motivation

Discovered via PHPStan in #3178534: Start running PHPStan on Drupal core (level 0):

  Line   core/lib/Drupal/Core/Database/Driver/mysql/Connection.php                         
 ------ ---------------------------------------------------------------------------------- 
  102    Class Drupal\Core\Database\Driver\mysql\StatementInterface not found.             

Line 102 of Drupal\Core\Database\Driver\mysql\Connection::handleQueryException() is:

      $query_string = ($query instanceof StatementInterface) ? $query->getQueryString() : $query;

StatementInterface does not exist in this namespace, but at Drupal\Core\Database\StatementInterface.

Steps to reproduce

Proposed resolution

Add the missing use statement.

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet