refactor(error): add error description for HTTP 404 status code

Author: parfeon

src/errors/pubnub-api-error.ts

@@ -102,6 +102,7 @@ export class PubNubAPIError extends Error {
     data ??= response.body;
 
     if (status === 402) message = 'Not available for used key set. Contact support@pubnub.com';
+    else if (status === 404) message = 'Resource not found';
     else if (status === 400) {
       category = StatusCategory.PNBadRequestCategory;
       message = 'Bad request';