Casts are not properly called on repository update

[Graphmaxer]

Environment

No response

Reproduction

On https://github.com/Graphmaxer/pinia-orm/tree/fix/cast-on-update with test feature/casts/custom_casts

Describe the bug

When updating an existing model inside a repo via save the cast is not properly called

Additional context

No response

Logs

No response

[Graphmaxer]

This looks like the issue is coming from this change 4ecf93f#diff-400250a2f26ef8d1fdaaa2a3757bfdf1dd8fda2c402d89c0670a7d7c110b260bL840, the new data record is not hydrated when updating an existing entry

[CodeDredd]

@Graphmaxer This was somehow also more a feature than a bug. I didn't exspect custom classes as values with their own serialzer.

[Graphmaxer]

Thanks you a lot 👍 We got this use case in our migration from vue/vuex-orm to pinia/pinia-orm. Maybe we should document this feature in the documentation ? 🤔