Fix AH invalid refresh token handling

[roel-de-vries]

Hi there, again 😅

Back with another small fix. The invalid refresh token handling was wrong for the AH provider.

I placed it inside a try-catch, not knowing the $this->execute is already wrapped in a try-catch with a return null fallback. So the AH provider never went in the catch, where the handling should've happen.

[Forceu]

Thanks :) that it weird, I would have thought that the inner try clause would catch it...

[roel-de-vries]

The inner try-catch of $this->execute did/does actually catch the errors. But they aren't re-thrown, so the extra try-catch in the Albert Heijn handler never got an error to handle - the response for failed execute calls is null and therefore valid :)

[Forceu]

Ah that makes sense, thank you