Wrap exception from deferred to capture the current stack trace (#13)

Author: nerzhulart

acp/src/commonMain/kotlin/com/agentclientprotocol/protocol/Protocol.kt

@@ -498,7 +498,7 @@ private fun convertJsonRpcExceptionIfPossible(jsonRpcException: JsonRpcException
         }
 
         else -> {
-            return jsonRpcException
+            return IllegalStateException(jsonRpcException.message, jsonRpcException)
         }
     }
 }