[BUG] Kotlin Constraints Preset omits @Valid annotation

[alexgavrisco]

Describe the bug.

Kotlin's Constraint Preset doesn't add Valid annotation to array/object fields, effectively disabling cascading validation.
It's similar to issue Java generator had #2175

Expected behavior

Valid annotation is added to array/object fields enabling cascading validation

Screenshots

None

How to Reproduce

1. Define JSON Schema that has an array/object property
2. Run codegen for Kotlin with ConstraintsPreset
3. Generated class doesn't have Valid annotation for array/object property

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👀 Have you checked for similar open issues?

• I checked and didn't find similar issue

🏢 Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to work on this issue ?

Yes I am willing to submit a PR!