[Kotlin][Server] Skip new post processing routine for kotlin server jaxrs (#18180)

* Skip post processing when generating JAXRS spec with Kotlin
This feature was previously added to work with the javalin5 library

* Add sample that proves what we expect after fixing this

* Update sample

* Added new samples to samples workflow

* Revert from jdk17 pipeline

samples/server/others/kotlin-server/jaxrs-spec-array-response/.openapi-generator-ignore

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+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md

samples/server/others/kotlin-server/jaxrs-spec-array-response/.openapi-generator/FILES

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+README.md
+build.gradle
+gradle.properties
+settings.gradle
+src/main/kotlin/org/openapitools/server/apis/StuffApi.kt
+src/main/kotlin/org/openapitools/server/models/Stuff.kt

samples/server/others/kotlin-server/jaxrs-spec-array-response/.openapi-generator/VERSION

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+7.5.0-SNAPSHOT

samples/server/others/kotlin-server/jaxrs-spec-array-response/README.md

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+# org.openapitools.server - Kotlin Server library for OpenAPI Stuff API created to reproduce issue
+
+## Requires
+
+* Kotlin 1.4.31
+* Gradle 6.8.2
+
+## Build
+
+First, create the gradle wrapper script:
+
+```
+gradle wrapper
+```
+
+Then, run:
+
+```
+./gradlew check assemble
+```
+
+This runs all tests and packages the library.
+
+## Features/Implementation Notes
+
+* Supports JSON inputs/outputs, File inputs, and Form inputs.
+* Supports collection formats for query parameters: csv, tsv, ssv, pipes.
+* Some Kotlin and Java types are fully qualified to avoid conflicts with types defined in OpenAPI definitions.
+
+<a id="documentation-for-api-endpoints"></a>
+## Documentation for API Endpoints
+
+All URIs are relative to *https://example.org/v1*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*StuffApi* | [**findStuff**](docs/StuffApi.md#findstuff) | **GET** /stuff | Finds stuff
+*StuffApi* | [**findUniqueStuff**](docs/StuffApi.md#finduniquestuff) | **GET** /uniquestuff | Finds unique stuff
+
+
+<a id="documentation-for-models"></a>
+## Documentation for Models
+
+ - [org.openapitools.server.models.Stuff](docs/Stuff.md)
+
+
+<a id="documentation-for-authorization"></a>
+## Documentation for Authorization
+
+
+Authentication schemes defined for the API:
+<a id="bearerAuth"></a>
+### bearerAuth
+
+- **Type**: HTTP Bearer Token authentication (JWT)
+

samples/server/others/kotlin-server/jaxrs-spec-array-response/build.gradle

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+group "org.openapitools"
+version "1.0.0"
+
+wrapper {
+    gradleVersion = '6.9'
+    distributionUrl = "https://services.gradle.org/distributions/gradle-$gradleVersion-all.zip"
+}
+
+buildscript {
+    ext.kotlin_version = "1.7.20"
+    ext.swagger_annotations_version = "1.5.3"
+    ext.jakarta_annotations_version = "2.1.1"
+    ext.jakarta_ws_rs_version = "3.1.0"
+    ext.jackson_version = "2.9.9"
+    repositories {
+        maven { url "https://repo1.maven.org/maven2" }
+        maven { url "https://plugins.gradle.org/m2/" }
+    }
+    dependencies {
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+    }
+}
+
+apply plugin: "java"
+apply plugin: "kotlin"
+apply plugin: "application"
+
+sourceCompatibility = 1.8
+
+compileKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+
+compileTestKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+
+repositories {
+    maven { setUrl("https://repo1.maven.org/maven2") }
+}
+
+dependencies {
+    implementation("org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version")
+    implementation("ch.qos.logback:logback-classic:1.2.1")
+    implementation("jakarta.ws.rs:jakarta.ws.rs-api:$jakarta_ws_rs_version")
+    implementation("jakarta.annotation:jakarta.annotation-api:$jakarta_annotations_version")
+    implementation("io.swagger:swagger-annotations:$swagger_annotations_version")
+    implementation("com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version")
+    implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version")
+    testImplementation("junit:junit:4.13.2")
+}

samples/server/others/kotlin-server/jaxrs-spec-array-response/gradle.properties

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+org.gradle.caching=true

samples/server/others/kotlin-server/jaxrs-spec-array-response/settings.gradle

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+rootProject.name = 'kotlin-server'

samples/server/others/kotlin-server/jaxrs-spec-array-response/src/main/kotlin/org/openapitools/server/apis/StuffApi.kt

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+package org.openapitools.server.apis;
+
+import org.openapitools.server.models.Stuff
+
+import jakarta.ws.rs.*
+import jakarta.ws.rs.core.Response
+
+
+import java.io.InputStream
+
+
+
+@Path("/")
+@jakarta.annotation.Generated(value = arrayOf("org.openapitools.codegen.languages.KotlinServerCodegen"), comments = "Generator version: 7.5.0-SNAPSHOT")
+interface StuffApi {
+
+    @GET
+    @Path("/stuff")
+    @Produces("application/json")
+    fun findStuff(): kotlin.collections.List<Stuff>
+
+    @GET
+    @Path("/uniquestuff")
+    @Produces("application/json")
+    fun findUniqueStuff(): kotlin.collections.Set<Stuff>
+}

samples/server/others/kotlin-server/jaxrs-spec-array-response/src/main/kotlin/org/openapitools/server/models/Stuff.kt

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+/**
+ * OpenAPI Stuff API created to reproduce issue
+ * Example created
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+*/
+package org.openapitools.server.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+/**
+ * 
+ *
+ * @param name 
+ * @param id 
+ * @param tag 
+ */
+
+
+data class Stuff (
+
+
+    @JsonProperty("name")
+    val name: kotlin.String,
+
+
+    @JsonProperty("id")
+    val id: kotlin.Long? = null,
+
+
+    @JsonProperty("tag")
+    val tag: kotlin.String? = null
+
+)
+