[Kotlin] Fix default values (#17937)

* Fixed invalid extraction of response body in kotlin-client jvm-spring-*

* Generated echo-api for kotlin-jvm-spring-3-restclient

* Specific echo-api for Kotlin without allOf/anyOf

* Specific echo-api for Kotlin without allOf/anyOf

* Generated all samples

* Added kotlin-jvm-spring-3-restclient sample to workflow

* Fixed syntax problem

* [kotlin] Fixed multiple problems with default values

* [kotlin] Removed old commented code

* [kotlin] Generated new samples after merge with master

* [kotlin] ensure-up-to-date

samples/client/echo_api/kotlin-jvm-spring-3-webclient/docs/Query.md

@@ -0,0 +1,18 @@
+
+# Query
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **kotlin.Long** | Query |  [optional]
+**outcomes** | [**inline**](#kotlin.collections.List<Outcomes>) |  |  [optional]
+
+
+<a id="kotlin.collections.List<Outcomes>"></a>
+## Enum: outcomes
+Name | Value
+---- | -----
+outcomes | SUCCESS, FAILURE, SKIPPED
+
+
+