Use operation hooks instead of deprecated model hooks

[bajtos]

See the discussion in #824. We were not able to remove deprecated model hooks because embedded relations are still relying on them.

There is a feature for inst.triggerParent in embedsMany that needs more consideration and possibly a rewrite for embedded relations to continue work. It is for updating the parent model if any changes are made to the relation. This part needs a redesign and rewrite to consider the different cases and to make it all consistent.

We should rewrite inst.triggerParent to not depend on deprecated hooks, for example using the approach outlined in d0cc791

cc @jannyHou @Amir-61 @superkhau