Exceptions aren't thrown on updates if entities don't have an id assigned

[Nahuel92]

Expected Behavior

As per #CrudRepostory.update JavaDocs:

This method issues an explicit update for the given entity. The method differs from save(Object) in that an update will be generated regardless if the entity has been saved previously or not. If the entity has no assigned ID then an exception will be thrown.

Last sentence is key.

Actual Behaviour

Exceptions are not thrown and updates on entities without IDs assigned are silently ignored.

Steps To Reproduce

You can see the example app provided, but steps are:

1. Create an app with latest Micronaut version and Micronaut Data JDBC and H2.
2. Create a simple entity and a @JdbcRepository for this entity.
3. Create a test where you create an entity, then remove the ID for this entity and try to update it. You can also use SQL scripts to achieve the same result.

Environment Information

• OS: Windows/MacOS (I don't think it matters)
• Java: 21 (I don't think it matters either).

Example Application

https://github.com/Nahuel92/micronaut-data-update-bug

Version

4.5.1