Node before_enter/after_exit are not coherent with set_{before_enter,_after_exit}

[paracetamolo]

What should be done?

Setting and getting should return the same result.

How should it be done?

@plafer suggested to error/panic in the Block case.

When is this task done?

A test with self.before_enter(self.set_before_enter(ids)) == ids should pass for all node variants.

Additional context

No response