fix(dev): keep the message on the throwable func

Author: tverney

plugins/amazonq/chat/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonqFeatureDev/FeatureDevExceptions.kt

@@ -25,7 +25,7 @@ internal fun codeGenerationFailedError(): Nothing =
     throw FeatureDevException(message("amazonqFeatureDev.code_generation.failed_generation"))
 
 internal fun noChangeRequiredException(): Nothing =
-    throw FeatureDevException(message("amazonqFeatureDev.exception.no_change_required_exception"))
+    throw NoChangeRequiredException(message("amazonqFeatureDev.exception.no_change_required_exception"), cause = null)
 
 internal fun uploadCodeError(): Nothing =
     throw FeatureDevException(message("amazonqFeatureDev.exception.upload_code"))

plugins/amazonq/chat/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonqFeatureDev/controller/FeatureDevController.kt

@@ -437,7 +437,7 @@ class FeatureDevController(
             is NoChangeRequiredException -> {
                 messenger.sendAnswer(
                     tabId = tabId,
-                    message = message("amazonqFeatureDev.exception.no_change_required_exception"),
+                    message = err.message,
                     messageType = FeatureDevMessageType.Answer,
                     canBeVoted = true
                 )