Missing sttp.monad.MonadError#blocking overriding for cats-effect

[flipp5b]

Follow-up to a thread at Discourse.

For now, CatsMonadAsyncError uses the default implementation of blocking (see sttp.monad.MonadError#blocking):

def blocking[T](t: => T): F[T] = eval(t)

eval is implemented as follows (see sttp.client3.impl.cats.CatsMonadError#eval):

override def eval[T](t: => T): F[T] = F.delay(t)

As a result, Sync[F].delay is used for blocking actions. That seems to be wrong.