[PATCH v5 1/3] nptl: Set cancellation type and state on pthread_exit (BZ #28267)

[Florian Weimer]

* Adhemerval Zanella:

> It is required by POSIX XSH 2.9.5 Thread Cancellation under the
> heading Thread Cancellation Cleanup Handlers.

The tests do not set type and state and rely on the default instead.
Would it make sense to test asynchronous cancellation, too?

Thanks,
Florian