Callback for hint dialog close

[simon-rotendahl-se]

My problem
I want to remove/destroy a hint when the user clicks outside the hint dialog, thereby closing the hint.

To solve this it would be nice to be able to set a callback for when the dialog closes, i.e. something like onHintDialogClose, like we have onHintClose.

There might already be a way to do this, but I've tried quite hard to find one, and I have not been able to.