fix(KotlinClientCodegen): store parsed bool values in additionalProperties

Author: atomgomba

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinClientCodegen.java

@@ -418,8 +418,10 @@ public void processOpts() {
             LOGGER.warn("You specified RxJava versions 1 and 2 and 3 or Coroutines together, please choose one of them.");
         } else if (hasRx3) {
             this.setUseRxJava3(Boolean.parseBoolean(additionalProperties.get(USE_RX_JAVA3).toString()));
+            additionalProperties.put(USE_RX_JAVA3, useRxJava3);
         } else if (hasCoroutines) {
             this.setUseCoroutines(Boolean.parseBoolean(additionalProperties.get(USE_COROUTINES).toString()));
+            additionalProperties.put(USE_COROUTINES, useCoroutines);
         }
 
         if (!hasRx3 && !hasCoroutines) {
@@ -448,6 +450,7 @@ public void processOpts() {
 
         if (additionalProperties.containsKey(OMIT_GRADLE_WRAPPER)) {
             setOmitGradleWrapper(Boolean.parseBoolean(additionalProperties.get(OMIT_GRADLE_WRAPPER).toString()));
+            additionalProperties.put(OMIT_GRADLE_WRAPPER, omitGradleWrapper);
         }
 
         if (additionalProperties.containsKey(CodegenConstants.SERIALIZATION_LIBRARY)) {
@@ -468,14 +471,15 @@ public void processOpts() {
 
         if (additionalProperties.containsKey(GENERATE_ONEOF_ANYOF_WRAPPERS)) {
             setGenerateOneOfAnyOfWrappers(Boolean.parseBoolean(additionalProperties.get(GENERATE_ONEOF_ANYOF_WRAPPERS).toString()));
+            additionalProperties.put(GENERATE_ONEOF_ANYOF_WRAPPERS, generateOneOfAnyOfWrappers);
         }
 
         if (additionalProperties.containsKey(FAIL_ON_UNKNOWN_PROPERTIES)) {
             setFailOnUnknownProperties(Boolean.parseBoolean(additionalProperties.get(FAIL_ON_UNKNOWN_PROPERTIES).toString()));
         } else {
-            additionalProperties.put(FAIL_ON_UNKNOWN_PROPERTIES, false);
             setFailOnUnknownProperties(false);
         }
+        additionalProperties.put(FAIL_ON_UNKNOWN_PROPERTIES, failOnUnknownProperties);
 
         commonSupportingFiles();