[MySQL] Support error code 3572 ER_LOCK_NOWAIT

[alex-dev]

On MySQL, a exception caused by error 3572 ER_LOCK_NOWAIT should be a LockWaitTimeoutException.

[derrabus]

What does DBAL raise instead currently? Do you want to contribute a PR?

[alex-dev]

A driver generic exception. I could... Should be but an update in a massive switch case in MySQL ExceptionConverter.

[derrabus]

Yes. And a functional test that reproduces your issue.