[BUG] Kotlin generator: CustomTypeAdapterFactory not registered with generateOneOfAnyOfWrappers

[Djaler]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

When generateOneOfAnyOfWrappers option used in kotlin generator and gson serialization library, model classes contains CustomTypeAdapterFactory, which should be used to correctly serialize/deserialize oneOf/anyOf parameters. But this factories are not used out of the box.

openapi-generator version

7.10.0

Suggest a fix

We should just generate this factories registration in Serializer.kt, like in jvm-retrofit2 ApiClient